1.
How long is a standard hair's growth phase?
Correct Answer
C. 2-6 years
Explanation
The correct answer is 2-6 years. The hair growth phase, known as the anagen phase, can vary in length for different individuals. On average, it lasts around 2-6 years. During this phase, the hair follicles actively produce new hair cells, resulting in hair growth. After the anagen phase, the hair enters a resting phase called the telogen phase, and eventually falls out to make room for new hair growth.
2.
What percentage of hair is in rest phase at any time?
Correct Answer
B. 10%
Explanation
At any given time, approximately 10% of hair is in the rest phase. This means that the hair is not actively growing and is in a dormant state. The rest phase, also known as the telogen phase, is a normal part of the hair growth cycle. During this phase, the hair follicle is not producing new hair strands. After the rest phase, the hair will enter the growth phase again, where new hair will begin to grow from the follicle.
3.
Hair loss may occur in women after:
Correct Answer
D. Childbirth
Explanation
Childbirth can cause hair loss in women due to hormonal changes. During pregnancy, high levels of estrogen prolong the hair growth phase, resulting in thicker and healthier hair. However, after childbirth, hormone levels drop significantly, causing hair to enter the resting phase and eventually fall out. This condition is known as postpartum hair loss and is temporary. It typically occurs around three to six months after giving birth and can last up to a year.
4.
____ can contribute to temporary hair loss.
Correct Answer
A. Stress
Explanation
Stress can contribute to temporary hair loss because it can disrupt the normal hair growth cycle. When a person is under stress, their body releases stress hormones which can affect the hair follicles and cause them to enter a resting phase. This can result in increased hair shedding and temporary hair loss. Additionally, stress can also lead to unhealthy habits such as poor nutrition and lack of sleep, which can further contribute to hair loss.
5.
Tight rollers and pigtails can result in:
Correct Answer
B. Falonic alcopecia
6.
If the scalp is ____ there may be permentant hair loss.
Correct Answer
D. Scarred
Explanation
If the scalp is scarred, it can lead to permanent hair loss. Scarring on the scalp can damage the hair follicles, which are responsible for hair growth. When the follicles are scarred, they may no longer be able to produce new hair, resulting in permanent hair loss. Scarring can be caused by various factors such as burns, injuries, or certain medical conditions.
7.
_____ imbalances can be a cause of hair loss.
Correct Answer
C. Hormonal
Explanation
Hormonal imbalances can disrupt the normal hair growth cycle, leading to hair loss. Hormones play a crucial role in regulating hair growth and follicle health. An imbalance in hormones, such as an excess of androgens or a deficiency in thyroid hormones, can cause hair follicles to miniaturize and eventually stop producing new hair. This can result in thinning hair or baldness. Hormonal imbalances can be caused by various factors, including genetics, medical conditions, stress, and certain medications.
8.
Moderate exercise can ____ blood circulation in your scalp.
Correct Answer
A. Improve
Explanation
Moderate exercise can improve blood circulation in your scalp. When you exercise, your heart rate increases, and more blood is pumped throughout your body, including your scalp. This increased blood flow delivers more oxygen and nutrients to your hair follicles, promoting healthy hair growth. Additionally, exercise helps to reduce stress, which can contribute to hair loss. Therefore, regular moderate exercise can have a positive impact on the blood circulation in your scalp, leading to healthier hair.
9.
_____ women experience hair loss before and during menopause.
Correct Answer
D. 1 in 4
Explanation
During menopause, hormonal changes occur in a woman's body, which can lead to hair loss. The correct answer, "1 in 4," suggests that 25% of women experience hair loss before and during menopause. This indicates that hair loss is a common occurrence during this stage of life for a significant portion of women.
10.
There are approximately ____ hairs on a scalp which is healthy.
Correct Answer
C. 10,000
Explanation
A healthy scalp typically has around 10,000 hairs.