Question

All of the following are correct regarding hair growth cycle except that

A) club hair is shed during follicle reactivation.
B) a hair in the scalp grows for 2 — 5 years.
C) a healthy adult with a full head of hair may lose up to 100 hairs each day.
D) during the active phase, the hair grows continuously.
E) the hair becomes club hair during the regression phase.

Answer 1

The incorrect statement about hair growth is that club hair is shed during follicle reactivation. The club hair is instead shed at the end of the telogen phase.

Step-by-step explanation:

The statement that is incorrect regarding the hair growth cycle is: A) club hair is shed during follicle reactivation.

The correct sequence of the hair growth cycle starts with the anagen phase, which is the active growth phase lasting from 2 to 7 years.

Following this is the catagen phase, a transitional stage that lasts for 2 to 3 weeks, during which the hair becomes a club hair.

Then, the telogen phase occurs, where the follicle is resting for about 2 to 4 months.

At the end of the telogen phase, the club hair is shed, and the cycle may begin again with the anagen phase.

A healthy adult can lose up to 100 hairs each day, and the hair grows continuously during the anagen phase.