Virginia Barber Practice Exam

What is the anagen phase in terms of hair growth?

1. The phase where hair follicles produce new hair

2. The transitional phase before hair falls out

3. The resting phase of hair growth

4. A phase where hair color changes

The correct answer is: The phase where hair follicles produce new hair

The anagen phase is the active growth stage of hair follicles, during which the hair grows continuously. In this phase, hair cells divide rapidly and push up through the scalp, resulting in the formation of new hair strands. This phase can last for several years, which is why hair can grow very long during this time. During the anagen phase, the hair is firmly anchored in the follicle and receives nutrients and oxygen from the surrounding tissues, enabling robust hair growth. The longer the hair remains in the anagen phase, the longer it can grow, which is particularly evident in different types of hair across various individuals. The other phases mentioned, such as the transitional phase and the resting phase, do not involve active hair growth and are characterized by different biological processes that eventually lead to hair shedding. The idea of hair color changing is also unrelated to the anagen phase.