Body Systems And Their Functions! Trivia Quiz
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Questions and Answers
- 1.
Which of the following is a function of mitochondria?
- A.
To produce energy for cell metabolism
- B.
To control cell activities
- C.
To breakk down molecules and microbes
- D.
T synthesise proteins
Correct Answer
A. To produce energy for cell metabolismExplanation
Mitochondria are known as the powerhouse of the cell because their main function is to produce energy through a process called cellular respiration. They generate adenosine triphosphate (ATP), which is the main energy currency of the cell. This energy is essential for various cellular activities and metabolic processes, such as growth, movement, and reproduction. Therefore, the correct answer is "To produce energy for cell metabolism."Rate this question:
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- 2.
In which of the following areas is the stratum lucidum usually thickest?
- A.
Eyelids
- B.
Palms
- C.
Legs
- D.
Scalp
Correct Answer
B. PalmsExplanation
The stratum lucidum is a layer of the epidermis, the outermost layer of the skin. It is found in areas of the body that have thick skin, such as the palms of the hands and the soles of the feet. The stratum lucidum is usually thickest in these areas due to the increased amount of keratinocytes, which are cells that produce the protein keratin. This layer helps to provide additional protection and support to the skin in areas that experience frequent friction and pressure.Rate this question:
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- 3.
The thumb is an example of which type of joint?
- A.
Ball and socket
- B.
Condyloid
- C.
Saddle
- D.
Hinge
Correct Answer
C. SaddleExplanation
A saddle joint is characterized by two bones that fit together like a rider on a saddle. This type of joint allows movement in multiple directions, including side-to-side and back-and-forth. The thumb joint is a prime example of a saddle joint because it allows for a wide range of motion, enabling us to grasp and manipulate objects with precision.Rate this question:
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- 4.
The action of the biceps femoris is to
- A.
Flex the lower leg
- B.
Extend the lower leg
- C.
Flex the lower arm
- D.
Extend the lower arm
Correct Answer
A. Flex the lower legExplanation
The biceps femoris is a muscle located in the back of the thigh. It is responsible for flexing the lower leg, meaning it helps to bend the knee joint. When the biceps femoris contracts, it pulls the lower leg towards the back of the thigh, allowing for flexion of the knee. This action is important for activities such as walking, running, and climbing stairs.Rate this question:
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- 5.
Which of the following is NOT a function of the liver?
- A.
Production of insulin
- B.
Production of bile
- C.
Detoxification of drugs
- D.
Breakdown of haemoglobin
Correct Answer
A. Production of insulinExplanation
The liver is responsible for many important functions in the body, including the production of bile, detoxification of drugs, and breakdown of haemoglobin. However, the production of insulin is not a function of the liver. Insulin is produced by the pancreas and plays a crucial role in regulating blood sugar levels.Rate this question:
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- 6.
Which of the following glands secretes antidiuretic hormone?
- A.
Anterior pituitary
- B.
Pineal
- C.
Adrenal
- D.
Posterior pituitary
Correct Answer
D. Posterior pituitaryExplanation
The posterior pituitary gland secretes antidiuretic hormone (ADH), also known as vasopressin. ADH plays a crucial role in regulating water balance in the body by controlling the amount of water reabsorbed by the kidneys. When ADH is released, it causes the kidneys to reabsorb water, reducing urine production and preventing dehydration. Therefore, the correct answer is the posterior pituitary gland.Rate this question:
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- 7.
Which of the following correctly states the amount of oxygen and carbon dioxide in expired air?
- A.
0.04% carbon dioxide and 21% oxygen
- B.
0.04% carbon dioxide and 16% oxygen
- C.
4.5% carbon dioxide and 21% oxygen
- D.
4.5% carbon dioxide and 16% oxygen
Correct Answer
D. 4.5% carbon dioxide and 16% oxygen -
- 8.
Which of the following is the function of the right ventricle of the heart?
- A.
Pump deoxygenated blood to the right atrium
- B.
Receive oxygenated blood from the lungs
- C.
Pump deoxygenated blood to the lungs
- D.
Receive oxygenated blood from the right atrium
Correct Answer
C. Pump deoxygenated blood to the lungsExplanation
The right ventricle of the heart pumps deoxygenated blood to the lungs. This is because the right atrium receives deoxygenated blood from the body and passes it to the right ventricle, which then pumps it to the lungs for oxygenation.Rate this question:
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- 9.
The lymphatic nodes located under the arm are known as the
- A.
Occipitall nodes
- B.
Axillary nodes
- C.
Popliteal nodes
- D.
Supratrochlear nodes
Correct Answer
B. Axillary nodesExplanation
The lymphatic nodes located under the arm are known as the axillary nodes. These nodes are an important part of the lymphatic system and are responsible for filtering and trapping harmful substances, such as bacteria and cancer cells, that may be present in the lymph fluid. The axillary nodes play a crucial role in the immune response and are often examined for the presence of abnormalities, such as swelling or tenderness, during medical examinations.Rate this question:
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- 10.
Which of the following sphincter muscles is located between the stomach and the duodenum?
- A.
Cardiac
- B.
Pyloric
- C.
Ileocaecal
- D.
Anal
Correct Answer
B. PyloricExplanation
The pyloric sphincter is located between the stomach and the duodenum. It acts as a valve, regulating the flow of partially digested food from the stomach into the small intestine. This sphincter helps to control the rate at which food leaves the stomach and enters the small intestine for further digestion and absorption of nutrients.Rate this question:
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- 11.
Which of the following is a function of the urinary system?
- A.
To produce erythrocytes
- B.
To regulate blood pressure
- C.
To synthesise proteins
- D.
To maintainn homeostasis
Correct Answer
D. To maintainn homeostasisExplanation
The urinary system is responsible for maintaining homeostasis in the body. It helps regulate the balance of water, electrolytes, and pH levels by filtering waste products, toxins, and excess substances from the blood. The kidneys play a crucial role in this process by filtering the blood and producing urine, which helps remove waste and maintain the body's fluid and electrolyte balance. Therefore, the function of the urinary system is to maintain homeostasis.Rate this question:
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- 12.
Which one of the following promotes the development of sperm in the testes?
- A.
FSH
- B.
LH
- C.
Oestrogen
- D.
Progesterone
Correct Answer
A. FSHExplanation
FSH, or follicle-stimulating hormone, promotes the development of sperm in the testes. It stimulates the production of sperm cells by activating the cells in the testes that are responsible for sperm production. FSH also helps regulate the production of other hormones involved in the reproductive system. LH, or luteinizing hormone, is responsible for stimulating testosterone production in the testes, but it does not directly promote the development of sperm. Oestrogen and progesterone are female sex hormones and do not play a direct role in sperm development.Rate this question:
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- 13.
Which of the following is a function of ribosomes?
- A.
To carry out respiration
- B.
To synthesise proteins
- C.
To package cell products
- D.
To digest bacteria and chemicals
Correct Answer
B. To synthesise proteinsExplanation
Ribosomes are responsible for protein synthesis in cells. They are small, spherical organelles found in the cytoplasm of both prokaryotic and eukaryotic cells. Ribosomes play a crucial role in translating the genetic information stored in DNA into functional proteins. They do this by assembling amino acids in the correct order according to the instructions provided by messenger RNA (mRNA). This process of protein synthesis is essential for the growth, development, and functioning of cells. Therefore, the function of ribosomes is to synthesize proteins.Rate this question:
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- 14.
Which of the following produces a secretion containing pheromones?
- A.
Eccrine sweat glands
- B.
Sebaceous glands
- C.
Apocrine sweat glands
- D.
Endocrine glands
Correct Answer
C. Apocrine sweat glandsExplanation
Apocrine sweat glands produce a secretion that contains pheromones. Pheromones are chemical substances that are released by an organism and can affect the behavior or physiology of other individuals of the same species. These glands are found in specific areas of the body, such as the armpits and genital region. The secretion produced by apocrine sweat glands is odorless, but when it comes into contact with bacteria on the skin's surface, it can produce a distinct odor. This odor plays a role in communication and attraction between individuals.Rate this question:
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- 15.
Which of the following is NOT a function of the skeletal system?
- A.
Production of erythrocytes
- B.
Support of soft tissue
- C.
Protection of vital organs
- D.
Production of Vitamin D
Correct Answer
D. Production of Vitamin DExplanation
The skeletal system is responsible for several functions, including support of soft tissue, protection of vital organs, and production of erythrocytes (red blood cells). However, the production of Vitamin D is not a function of the skeletal system. Vitamin D is primarily produced in the skin through exposure to sunlight and plays a role in calcium absorption and bone health, but it is not directly produced by the skeletal system itself.Rate this question:
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- 16.
A muscle which plantar flexes the ankle is the
- A.
Tibialis anterior
- B.
Soleus
- C.
Flexor digitorum
- D.
Brachialis
Correct Answer
B. SoleusExplanation
The muscle that plantar flexes the ankle is the soleus. Plantar flexion refers to the movement of pointing the foot downward, like when standing on tiptoes. The soleus muscle is located in the calf and works together with the gastrocnemius muscle to perform this movement. The tibialis anterior muscle is responsible for dorsiflexion, which is the movement of pulling the foot upward. The flexor digitorum muscle flexes the toes, not the ankle. The brachialis muscle is located in the upper arm and is responsible for flexing the elbow joint.Rate this question:
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- 17.
The neurones which carry impulses out of the CNS to muscles and glands are
- A.
Sensory
- B.
Intermediate
- C.
Motor
- D.
Sympathetic
Correct Answer
C. MotorExplanation
The correct answer is "Motor." Motor neurons are responsible for carrying impulses from the central nervous system (CNS) to muscles and glands, allowing for voluntary and involuntary movements. These neurons transmit signals that initiate muscle contractions and control various bodily functions. Sensory neurons, on the other hand, carry impulses towards the CNS, while intermediate neurons are found within the CNS and help relay signals between sensory and motor neurons. Sympathetic neurons are part of the autonomic nervous system and control the body's fight-or-flight response.Rate this question:
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- 18.
The region of the brain involved in homeostasis is the
- A.
Thalamus
- B.
Cerebrum
- C.
Hypothalamus
- D.
Cortex
Correct Answer
C. HypothalamusExplanation
The hypothalamus is the region of the brain that is primarily responsible for maintaining homeostasis in the body. It regulates various bodily functions such as body temperature, hunger, thirst, and sleep-wake cycles. It receives signals from different parts of the body and sends out appropriate responses to maintain a stable internal environment. The thalamus is involved in relaying sensory information to the cerebral cortex, while the cerebrum and cortex are responsible for higher cognitive functions. Therefore, the hypothalamus is the correct answer as it plays a crucial role in maintaining homeostasis.Rate this question:
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- 19.
Which of the following glands produces insulin?
- A.
Pancreas
- B.
Adrenal medulla
- C.
Adrenal cortex
- D.
Anterior pituitary
Correct Answer
A. PancreasExplanation
The pancreas is responsible for producing insulin. Insulin is a hormone that helps regulate blood sugar levels by allowing cells to take in glucose from the bloodstream. The adrenal medulla and adrenal cortex are responsible for producing other hormones such as adrenaline and cortisol. The anterior pituitary gland produces various hormones that regulate growth, reproduction, and other bodily functions. However, none of these glands produce insulin except for the pancreas.Rate this question:
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- 20.
Which of the following best describes the function of the lungs?
- A.
Breathing
- B.
Gas exchange
- C.
Respiration
- D.
Inhalation
Correct Answer
B. Gas exchangeExplanation
The function of the lungs is to facilitate gas exchange. This process involves the intake of oxygen and the removal of carbon dioxide from the body. The lungs have specialized structures called alveoli, which are responsible for the exchange of gases between the air and the bloodstream. Oxygen from the air is taken up by the blood, while carbon dioxide is released from the blood into the air in the lungs. This gas exchange is crucial for supplying oxygen to the body's tissues and removing waste carbon dioxide.Rate this question:
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Current Version
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Mar 21, 2023Quiz Edited by
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Apr 25, 2011Quiz Created by
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