El Dorado Cosmetology: Scalp And Hair! Quiz

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  • 1/98 Questions

    ________ is a dye extracted from leaves of an ormental shrub.

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About This Quiz

Explore the fascinating world of hair science with the 'El Dorado Cosmetology: Scalp and Hair! Quiz'. This quiz covers the essentials of trichology, including hair structure, root systems, and the role of nutrients. It's perfect for learners interested in cosmetology and hair care professionals seeking to deepen their knowledge.

El Dorado Cosmetology: Scalp And Hair! Quiz - Quiz

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  • 2. 

    Overly porous hair is usually caused by:

    • Strand testing

    • Brushing hair before shampooing

    • Conditioning treatments

    • Overprocessing

    Correct Answer
    A. Overprocessing
    Explanation
    Overly porous hair is usually caused by overprocessing. Overprocessing refers to excessive use of chemical treatments such as coloring, perming, or relaxing, which can damage the hair cuticle and make it more porous. When the hair cuticle is damaged, it becomes more prone to absorbing and losing moisture, leading to dryness, breakage, and frizz. This can result in hair that feels rough, brittle, and lacks shine. Therefore, overprocessing is the most likely cause of overly porous hair among the given options.

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  • 3. 

    Hair growth occurs in cycles of three phases; anagen, catagen, and;

    • Biogen

    • Transition

    • Telogen

    • Growth phase

    Correct Answer
    A. Telogen
    Explanation
    Hair growth occurs in cycles, and the three phases of this cycle are anagen, catagen, and telogen. The anagen phase is the active growth phase, where the hair follicle is producing new cells and the hair is growing. The catagen phase is a transitional phase, where the hair follicle starts to shrink and detach from the blood supply. Finally, the telogen phase is the resting phase, where the hair follicle is inactive and the hair is not growing. During this phase, the old hair eventually falls out, making way for new hair to grow in the next anagen phase. Therefore, the correct answer is telogen.

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  • 4. 

    The pigment in the cortex that gives natural color to the hair is known as:

    • Melanin

    • Aniline

    • Disulfide

    • Sebum

    Correct Answer
    A. Melanin
    Explanation
    Melanin is the pigment in the cortex of the hair that gives it its natural color. It is responsible for determining whether hair is black, brown, red, or blonde. Melanin is produced by specialized cells called melanocytes, which are located in the hair follicles. The amount and type of melanin produced by these cells determine the specific color of an individual's hair.

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  • 5. 

    The hair shaft is made up of three layers; the cuticle, cortex, and:

    • Root

    • Bulb

    • Follicle

    • Medulla

    Correct Answer
    A. Medulla
    Explanation
    The hair shaft is composed of three layers: the cuticle, cortex, and medulla. The cuticle is the outermost layer that protects the hair, while the cortex is the middle layer responsible for the hair's strength, color, and texture. The medulla, located at the center of the hair shaft, is a soft and spongy layer that is not always present in all hair types. It helps to provide structural support to the hair. Therefore, the correct answer is Medulla.

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  • 6. 

    The four most important factors in a hair analysis are texture, density, porosity, and:

    • Elasticity

    • Color

    • Length

    • Hairline

    Correct Answer
    A. Elasticity
    Explanation
    Elasticity is an important factor in hair analysis because it determines the hair's ability to stretch and return to its original shape without breaking. It indicates the hair's strength and health. Hair with good elasticity is less prone to breakage and damage, while hair with low elasticity is more likely to break and have issues such as split ends. Therefore, assessing elasticity helps in understanding the overall condition and quality of the hair.

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  • 7. 

    The measure of how many individual hair strands there are on 1 square inch of scalp is the hair's:

    • Density

    • Texture

    • Coarseness

    • Porosity

    Correct Answer
    A. Density
    Explanation
    Density refers to the number of individual hair strands on a specific area of the scalp, typically measured per square inch. It is a measure of how closely packed the hair strands are on the scalp. Texture, coarseness, and porosity, on the other hand, refer to different characteristics of the hair, such as its feel, thickness, and ability to absorb moisture. Therefore, density is the correct answer as it specifically relates to the number of hair strands on the scalp.

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  • 8. 

    The procedure of transpanting hair plugs may be performed by

    • Surgeons

    • Estheticians

    • Barbers

    • Cosmetologist

    Correct Answer
    A. Surgeons
    Explanation
    The procedure of transplanting hair plugs involves a complex surgical process that requires medical expertise and precision. Surgeons are highly trained professionals who have the necessary skills and knowledge to perform such procedures. Estheticians, barbers, and cosmetologists do not have the medical training or expertise required for hair plug transplantation. Therefore, surgeons are the correct professionals to perform this procedure.

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  • 9. 

    The sabaceous glands secrete a substance called:

    • Keratin

    • Lymph

    • Melanin

    • Sebum

    Correct Answer
    A. Sebum
    Explanation
    Sebum is the correct answer because sebaceous glands are responsible for secreting sebum, which is an oily substance that lubricates and moisturizes the skin and hair. Sebum helps to keep the skin and hair hydrated and protects them from drying out. It also helps to maintain the pH balance of the skin and has antibacterial properties. Therefore, sebum plays a crucial role in keeping the skin and hair healthy.

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  • 10. 

    Hair can be streched up to 50% of its original length when it is:

    • Dry

    • Damaged

    • Permed

    • Wet

    Correct Answer
    A. Wet
    Explanation
    When hair is wet, it becomes more flexible and elastic due to the presence of water. This allows the hair to be stretched up to 50% of its original length without breaking or causing damage. Once the hair dries, it loses moisture and becomes more rigid, making it less prone to stretching. Therefore, the correct answer is wet.

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  • 11. 

    The branch of science that focuses on the hair, its diseases, and its care is called:

    • Biology

    • Dermatology

    • Trichology

    • Hairology

    Correct Answer
    A. Trichology
    Explanation
    Trichology is the branch of science that focuses on the hair, its diseases, and its care. It specifically deals with the study of hair and scalp disorders, hair loss, hair growth, and the overall health of the hair. Trichologists are experts in diagnosing and treating various hair and scalp conditions, as well as providing guidance on hair care practices and treatments. Therefore, Trichology is the correct answer for the given question.

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  • 12. 

    Tinea capitis is more commonly knows as

    • Ringworm of the nails

    • Ringworm of the foot

    • Honeycomb ringworm

    • Ringworm of the scalp

    Correct Answer
    A. Ringworm of the scalp
    Explanation
    Tinea capitis is a fungal infection that affects the scalp. It is commonly known as ringworm of the scalp. The infection causes red, itchy patches on the scalp, and can lead to hair loss. It is called ringworm because it forms a circular pattern on the skin, resembling a ring. The infection is caused by various types of fungi and is contagious. Treatment usually involves antifungal medications, both topical and oral, to eliminate the infection and relieve symptoms.

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  • 13. 

    Hair is made up of five elements; carbon, nitrogen, hydrogen:

    • Oxygen and sulfur

    • Copper and oxygen

    • Oxygen and sodium

    • Sulfur and chlorine

    Correct Answer
    A. Oxygen and sulfur
    Explanation
    Hair is primarily composed of a protein called keratin, which is made up of various elements including carbon, nitrogen, and hydrogen. However, sulfur is also an essential component of hair as it helps to form disulfide bonds, which give hair its strength and structure. Oxygen is also present in hair as it is a component of both keratin and water, which is essential for maintaining hair hydration. Therefore, the correct answer is oxygen and sulfur.

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  • 14. 

    Porosity is defined as the hair's:

    • Ability to stretch

    • Thickness or thinness

    • Degree of straightness or curliness

    • Ability to absorb moisture

    Correct Answer
    A. Ability to absorb moisture
    Explanation
    Porosity refers to the hair's ability to absorb moisture. It determines how well the hair can retain and hold onto moisture. Hair with high porosity tends to absorb moisture easily but may also lose it quickly, while hair with low porosity has difficulty absorbing moisture. Understanding the porosity of the hair is important for determining the right hair care routine and products to maintain optimal moisture balance.

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  • 15. 

    Canities is the technical term for

    • Gray hair

    • Brittle hair

    • Dundruff

    • Split ends

    Correct Answer
    A. Gray hair
    Explanation
    Canities is the technical term for gray hair. This term is used to describe the natural loss of pigment in hair, resulting in a color change from the original color to shades of gray or white. As people age, the production of melanin, which gives color to the hair, decreases, leading to the appearance of gray hair. Canities is a common occurrence and is influenced by factors such as genetics, lifestyle, and environmental factors.

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  • 16. 

    Of all the hair types, the hair with the largest diameter is:

    • Gray

    • Fine

    • Straight

    • Coarse

    Correct Answer
    A. Coarse
    Explanation
    Coarse hair refers to hair strands that have a larger diameter compared to other hair types. This means that the individual strands of coarse hair are thicker and have a wider circumference. Coarse hair is often characterized by its rough texture and can be more resistant to styling and manipulation. It is typically more prone to frizz and can require extra care and moisture to maintain its health and appearance.

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  • 17. 

    Postpartum alopecia affects

    • Women at the end of a pregnancy

    • Both men and women

    • Men with autoimmune disease

    • Women over age 40

    Correct Answer
    A. Women at the end of a pregnancy
    Explanation
    Postpartum alopecia refers to hair loss that occurs in women after giving birth. This is a common condition that is caused by hormonal changes in the body. During pregnancy, women experience an increase in estrogen levels, which prolongs the hair growth phase. However, after childbirth, estrogen levels drop significantly, causing many hairs to enter the resting phase and eventually fall out. This hair loss is temporary and typically resolves on its own within a few months. Therefore, the correct answer is "women at the end of a pregnancy."

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  • 18. 

    A surgical option for the treatment of hair loss is

    • Minoxidil

    • Finasteride

    • Toupees

    • Hair plugs

    Correct Answer
    A. Hair plugs
    Explanation
    Hair plugs are a surgical option for the treatment of hair loss. This procedure involves taking small sections of hair-bearing scalp from the back or sides of the head and transplanting them into the balding areas. Hair plugs provide a permanent solution to hair loss by restoring natural hair growth in the affected areas. Minoxidil and finasteride are non-surgical options commonly used for the treatment of hair loss, while toupees are non-surgical hairpieces that can be worn to cover bald spots.

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  • 19. 

    The two main divisions of the hair are the hair shaft and the:

    • Hair Root

    • Follicle

    • Bulb

    • Arrector Pili

    Correct Answer
    A. Hair Root
    Explanation
    The hair root is the correct answer because it is one of the two main divisions of the hair. The hair root is located beneath the surface of the skin and is responsible for anchoring the hair in the follicle. It contains the hair bulb, which is the living part of the hair that produces new cells. The hair root also contains the papilla, which supplies nutrients to the hair follicle. Overall, the hair root plays a crucial role in hair growth and maintenance.

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  • 20. 

    The dermal papilla contains the blood and nerve supply that provides:

    • Pheomelanin

    • Sebum

    • Eumelanin

    • Nutrients

    Correct Answer
    A. Nutrients
    Explanation
    The dermal papilla contains the blood and nerve supply that provides nutrients to the hair follicles. Nutrients are essential for the growth and maintenance of healthy hair. They provide the necessary building blocks and energy for hair cells to function properly. Without an adequate supply of nutrients, the hair follicles may become weak and unable to produce strong and healthy hair strands. Therefore, the presence of blood and nerve supply in the dermal papilla ensures that the hair follicles receive the necessary nutrients for optimal hair growth.

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  • 21. 

    Practicing approved sanitation and disinfection procedures is necessary to prevent the spread of

    • Androgenic alopecia

    • Tinea and pityriasis

    • Monilethrix

    • Trichorrhexis nodosa

    Correct Answer
    A. Tinea and pityriasis
    Explanation
    Practicing approved sanitation and disinfection procedures is necessary to prevent the spread of tinea and pityriasis. Tinea is a fungal infection that commonly affects the skin, scalp, and nails, while pityriasis refers to a group of skin conditions characterized by red, scaly patches. Both conditions are contagious and can be transmitted through direct contact or sharing personal items. By following proper sanitation and disinfection procedures, such as regularly cleaning and disinfecting surfaces, tools, and equipment, the risk of spreading these infections can be minimized.

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  • 22. 

    Permanent haircolors, perm solutions, and chemical relaxers must have an alkaline pH in order to:

    • Penetrate the Cuticle Layer

    • Penetrate the Medulla

    • Remove the Cortex

    • Remove the Cuticle Layer

    Correct Answer
    A. Penetrate the Cuticle Layer
    Explanation
    Permanent haircolors, perm solutions, and chemical relaxers must have an alkaline pH in order to penetrate the cuticle layer. The cuticle layer is the outermost protective layer of the hair shaft, and it consists of overlapping scales that need to be lifted for these chemical processes to work effectively. Alkaline pH helps to open up the cuticle scales, allowing the products to enter the hair shaft and make the desired changes to the hair structure.

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  • 23. 

    Inactive sebaceous glands are generally the cause of:

    • Dry hair and scalp

    • Canities

    • Abnormal hair loss

    • Oily hair and scalp

    Correct Answer
    A. Dry hair and scalp
    Explanation
    Inactive sebaceous glands refer to glands that are not producing enough sebum, which is the natural oil that moisturizes the hair and scalp. When these glands are inactive, the hair and scalp can become dry. This lack of moisture can lead to dryness, itchiness, and flakiness of the scalp, as well as brittle and dry hair. Therefore, inactive sebaceous glands are generally the cause of dry hair and scalp.

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  • 24. 

    The lower part of the hair root is the club-shaped:

    • Arrector Pili

    • Hair Shaft

    • Dermal Papilla

    • Hair Bulb

    Correct Answer
    A. Hair Bulb
    Explanation
    The hair bulb is the correct answer because it is the lower part of the hair root that is club-shaped. The hair bulb is located at the base of the hair follicle and contains the dermal papilla, which provides nourishment to the hair follicle. The hair shaft refers to the visible part of the hair that extends beyond the scalp. The arrector pili is a small muscle attached to the hair follicle that causes the hair to stand up when it contracts.

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  • 25. 

    Fine hair has the smallest diameter and is more likely than medium or coarse hair to be:

    • Difficult to process

    • Resistant to processing

    • Under processed during chemical services

    • Damaged by chemical services

    Correct Answer
    A. Damaged by chemical services
    Explanation
    Fine hair has the smallest diameter, which means it is more delicate and fragile compared to medium or coarse hair. Due to its delicate nature, fine hair is more susceptible to damage caused by chemical services such as coloring, perming, or straightening. The chemicals used in these processes can be harsh and can weaken the hair structure, leading to breakage, dryness, and overall damage. Therefore, fine hair is more likely to be damaged by chemical services.

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  • 26. 

    A hair analysis should be performed:

    • Prior to haircutting only

    • After all salon services

    • Prior to all salon services

    • During a client's first visit

    Correct Answer
    A. Prior to all salon services
    Explanation
    Hair analysis should be performed prior to all salon services to assess the condition of the hair and scalp. This analysis helps the stylist determine the appropriate treatments, products, and techniques to use during the salon service. By conducting the analysis beforehand, the stylist can identify any underlying issues or concerns that may affect the outcome of the service. This ensures that the client receives personalized and tailored services that address their specific needs.

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  • 27. 

    The term applied to abnormal hair loss is:

    • Trichoptilosis

    • Canities

    • Hypertrichosis

    • Alopecia

    Correct Answer
    A. Alopecia
    Explanation
    Alopecia is the correct answer because it refers to abnormal hair loss. Trichoptilosis is the term for split ends, canities refers to the graying of hair, and hypertrichosis is excessive hair growth.

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  • 28. 

    To temporarily wave their hair Romans would use ______ and wooden rollers, then they would bake in the sun.

    Correct Answer
    Mud
    Explanation
    Romans would use mud to temporarily wave their hair. They would apply mud to their hair and then use wooden rollers to shape it. After that, they would expose their hair to the sun to dry and set the waves. The mud acted as a styling product, providing texture and hold to the hair. This was a common practice among Romans to achieve the desired hairstyle.

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  • 29. 

    At the base of the follicle is a tiny involuntary muscle called the:

    • Arrector Pili

    • Dermal Papilla

    • Orbicularis Oculi

    • Medulla

    Correct Answer
    A. Arrector Pili
    Explanation
    The correct answer is Arrector Pili. The arrector pili muscle is a small involuntary muscle located at the base of the hair follicle. When this muscle contracts, it causes the hair to stand up, resulting in what is commonly known as "goosebumps." This muscle is responsible for regulating body temperature by trapping a layer of air close to the skin, providing insulation. It also plays a role in expressing emotions, such as fear or excitement, by causing the hair to stand on end.

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  • 30. 

    The ratio of eumelanin to pheomelanin determines:

    • Natural hair texture

    • Haircolor processing time

    • Natural wave pattern

    • Natural hair color

    Correct Answer
    A. Natural hair color
    Explanation
    The ratio of eumelanin to pheomelanin determines natural hair color. Eumelanin is responsible for darker hair colors such as black or brown, while pheomelanin is responsible for lighter hair colors such as blonde or red. The varying levels of these two pigments in the hair follicles determine the overall hair color that an individual has.

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  • 31. 

    Alopecia areta is characterized by

    • The sudden falling out of hair

    • Hair loss at the end of pregnancy

    • Complete body hair loss

    • Male pattern baldness

    Correct Answer
    A. The sudden falling out of hair
    Explanation
    Alopecia areata is a condition that is characterized by the sudden falling out of hair. This means that individuals with alopecia areata experience hair loss in patches or clumps, which can occur on the scalp or other parts of the body. It is different from other forms of hair loss such as hair loss at the end of pregnancy, complete body hair loss, or male pattern baldness, as these conditions have different causes and patterns of hair loss.

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  • 32. 

    Acquired canities

    • Develops with age

    • Occurs only in albinos

    • Is present at birth

    • Is present before birth

    Correct Answer
    A. Develops with age
    Explanation
    Acquired canities refers to the graying or whitening of hair that occurs as a person ages. This condition is not present at birth or before birth, as it develops over time. It is also not exclusive to albinos, as anyone can experience graying hair as they get older. Therefore, the correct answer is that acquired canities develops with age.

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  • 33. 

    Finasteride is a prescription drug that is taken

    • Orally

    • Topically

    • By injection

    • In a patch

    Correct Answer
    A. Orally
    Explanation
    Finasteride is a prescription drug that is taken orally. This means that it is ingested by mouth, typically in the form of a pill or tablet. By taking it orally, the drug can be absorbed into the bloodstream through the digestive system, allowing it to reach its target areas and exert its intended effects.

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  • 34. 

    Finasteride, a hair loss treatment approved by the FDA, is not prescribed for women because of the possibility of

    • Excessive hair growth

    • Excessive hair loss

    • Excessive weight loss

    • Birth defects

    Correct Answer
    A. Birth defects
    Explanation
    Finasteride, a hair loss treatment approved by the FDA, is not prescribed for women because it has been found to increase the risk of birth defects. This medication works by inhibiting the conversion of testosterone to dihydrotestosterone (DHT), a hormone that contributes to hair loss. However, DHT also plays a crucial role in the development of male fetuses. Therefore, women who are pregnant or planning to become pregnant should avoid using finasteride to prevent potential harm to the unborn baby.

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  • 35. 

    Amino acids are linked together by chemical bonds called:

    • Hydrogen bonds

    • Peptide bonds

    • Side bonds

    • Salt bonds

    Correct Answer
    A. Peptide bonds
    Explanation
    Amino acids are linked together by chemical bonds called peptide bonds. Peptide bonds are formed through a condensation reaction between the carboxyl group of one amino acid and the amino group of another amino acid, resulting in the release of a water molecule. These peptide bonds create a chain-like structure known as a polypeptide, which is the basis for protein formation. Hydrogen bonds, side bonds, and salt bonds are not involved in the linking of amino acids.

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  • 36. 

    Polypeptide chains are cross-linked together by these side bonds:

    • Disulfide, bisulfide, and salt bonds

    • Hydrogen, salt, and disulfide bonds

    • Polypeptide, hydrogen, and salt bonds

    • Salt, hydrogen, and peptide bonds

    Correct Answer
    A. Hydrogen, salt, and disulfide bonds
    Explanation
    Polypeptide chains are cross-linked together by hydrogen, salt, and disulfide bonds. Hydrogen bonds form between the hydrogen atom of one amino acid and the oxygen or nitrogen atom of another amino acid. Salt bonds, also known as ionic bonds, occur between positively and negatively charged amino acids. Disulfide bonds are covalent bonds formed between two cysteine amino acids through the oxidation of their sulfur atoms. These side bonds play a crucial role in stabilizing the three-dimensional structure of proteins.

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  • 37. 

    Permanent waving and chemical hair relaxing change the shape of the hair by chemically changing the:

    • Peptide bonds

    • Salt bonds

    • Hydrogen bonds

    • Disulfide bonds

    Correct Answer
    A. Disulfide bonds
    Explanation
    Permanent waving and chemical hair relaxing change the shape of the hair by chemically changing the disulfide bonds. Disulfide bonds are strong chemical bonds that hold together the protein structure of the hair. By breaking and reforming these bonds, the hair can be reshaped and styled. This process is achieved using chemical solutions that alter the disulfide bonds, allowing the hair to be permanently curled or straightened. Peptide bonds, salt bonds, and hydrogen bonds are also present in the hair, but they are not as strong as disulfide bonds and do not have the same impact on changing the hair's shape.

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  • 38. 

    The agents that easily break hydrogen bonds are:

    • Chemical relaxers

    • Water or heat

    • Changes in pH

    • Permanent waves

    Correct Answer
    A. Water or heat
    Explanation
    Water or heat can easily break hydrogen bonds. Hydrogen bonds are relatively weak bonds that form between a hydrogen atom and an electronegative atom such as oxygen or nitrogen. Water molecules, for example, can break these bonds by providing a medium for the hydrogen bonds to dissociate. Heat can also break hydrogen bonds by increasing the kinetic energy of the molecules, causing them to move more vigorously and break the bonds holding them together. Therefore, both water and heat can disrupt hydrogen bonds, making them agents that easily break these bonds.

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  • 39. 

    The range of red and ginger to yellow/blonde tones in natural hair color is provided by:

    • Pheomelanin

    • Melanin

    • Red melanin

    • Eumelanin

    Correct Answer
    A. Pheomelanin
    Explanation
    Pheomelanin is responsible for providing the range of red and ginger to yellow/blonde tones in natural hair color. It is a type of melanin that produces these lighter shades of hair. Melanin, red melanin, and eumelanin are not specifically associated with these particular hair colors.

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  • 40. 

    Some degree of hair loss is evident in ____ percent of men and women by age 35.

    • 10

    • 40

    • 25

    • 95

    Correct Answer
    A. 40
    Explanation
    According to the given information, some degree of hair loss is evident in 40% of men and women by age 35.

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  • 41. 

    The technical term for knotted hair is

    • Trichorrhexis nodosa

    • Trichoptilosis

    • Tinea capitis

    • Monilethrix

    Correct Answer
    A. Trichorrhexis nodosa
    Explanation
    Trichorrhexis nodosa is the correct technical term for knotted hair. This condition is characterized by weak points in the hair shaft, leading to the formation of knots or nodules. It can be caused by various factors such as excessive heat styling, chemical damage, or certain medical conditions. Trichoptilosis refers to split ends, tinea capitis is a fungal infection of the scalp, and monilethrix is a genetic condition that causes the hair to be fragile and prone to breakage.

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  • 42. 

    The only difference between gray and pigmented hair is that gray hair:

    • Lacks strength

    • Is more resistant

    • Lacks melanin

    • Is coaser

    Correct Answer
    A. Lacks melanin
    Explanation
    Gray hair lacks melanin, which is the pigment responsible for giving hair its color. As we age, the cells that produce melanin gradually decrease, leading to a loss of color in the hair. This is why gray hair appears colorless or white. The other options mentioned, such as lacking strength, being more resistant, or being coarser, are not specific to gray hair and can vary from person to person regardless of hair color.

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  • 43. 

    Permanent waving, chjemical relaxing, and oxidation haircoloring cause changes that occur in the:

    • Cuticle

    • Roots

    • Cortex

    • Medulla

    Correct Answer
    A. Cortex
    Explanation
    Permanent waving, chemical relaxing, and oxidation haircoloring cause changes that occur in the cortex of the hair. The cortex is the middle layer of the hair shaft and is responsible for the hair's strength, elasticity, and color. These chemical processes alter the structure of the cortex, allowing for the desired changes in texture or color. The cuticle, roots, and medulla may also be affected to some extent, but the cortex is the primary site of change in these processes.

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  • 44. 

    Some vellus hair is replaced with terminal hair because of hormonal changes during:

    • Middle age

    • Infancy

    • Puberty

    • Early childhood

    Correct Answer
    A. Puberty
    Explanation
    During puberty, hormonal changes occur in the body, particularly an increase in androgen hormones such as testosterone. These hormonal changes stimulate the growth of terminal hair, which is thicker, darker, and longer than vellus hair. This is why some vellus hair, which is fine and light, is replaced with terminal hair during puberty.

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  • 45. 

    Hypertrichosis is characterized by

    • Abnormal hair growth

    • Abnormal hair loss

    • Split ends

    • Abnormal hair color

    Correct Answer
    A. Abnormal hair growth
    Explanation
    Hypertrichosis is a condition characterized by excessive or abnormal hair growth on areas of the body where hair is normally minimal or absent. This condition can manifest as an increase in hair density, length, and thickness. It is often genetic and can affect both males and females. Hypertrichosis can be localized, affecting specific areas, or generalized, affecting the entire body. It is important to note that hypertrichosis is different from hirsutism, which is excessive hair growth in a pattern typically seen in males, affecting women.

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  • 46. 

    The cortex accounts for about ____ of the total weight of the hair.

    • 50%

    • 90%

    • 25%

    • 10%

    Correct Answer
    A. 90%
    Explanation
    The cortex, which is the middle layer of the hair shaft, is responsible for providing strength, elasticity, and color to the hair. It is the thickest layer and makes up the majority of the hair's weight. Therefore, it is reasonable to assume that the cortex accounts for a large percentage of the total weight of the hair, and 90% seems like a plausible estimate.

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  • 47. 

    Compared to hydrogen and salt bonds, disulfide bonds are:

    • Stronger

    • More easily broken

    • More numerous

    • Weaker

    Correct Answer
    A. Stronger
    Explanation
    Disulfide bonds are stronger compared to hydrogen and salt bonds. Disulfide bonds form between two sulfur atoms in a protein chain and are covalent in nature. They are stronger because the covalent bond involves the sharing of electrons between the sulfur atoms, resulting in a more stable and stronger bond. In contrast, hydrogen bonds are weaker and form between a hydrogen atom and an electronegative atom, while salt bonds are also weaker and form due to the attraction between positively and negatively charged ions.

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  • 48. 

    Hair texture is a term that refers to the hair's:

    • Degree of straightness or curliness

    • Ability to stretch

    • Ability to absorb moisture

    • Diameter

    Correct Answer
    A. Diameter
    Explanation
    Hair texture refers to the diameter of the hair strands. It is a term used to describe how thin or thick the individual strands of hair are. Hair can have a fine texture, which means the strands are thin, or a coarse texture, which means the strands are thick. The diameter of the hair can affect its appearance and how it behaves. For example, fine hair may appear limp and lack volume, while coarse hair may be more prone to frizz and require more styling products to manage.

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  • 49. 

    Split ends are also known by the term

    • Tinea

    • Fragilitas crinium

    • Trichoptilosis

    • Canities

    Correct Answer
    A. Trichoptilosis
    Explanation
    Trichoptilosis is the correct answer because it refers to the condition known as split ends. Split ends occur when the hair shaft becomes damaged and splits into two or more strands. This term is commonly used in the beauty and hair care industry to describe this specific hair problem. Tinea refers to a fungal infection of the skin, fragilitas crinium refers to hair breakage, and canities refers to the graying of hair. Therefore, trichoptilosis is the most appropriate term to describe split ends.

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  • Sep 15, 2023
    Quiz Edited by
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  • Sep 15, 2010
    Quiz Created by
    Daniia
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