★ Trichology Quiz
Human hair on average, grows about:
A. 1/4″ per month
B. 1/2″ per month
C. 1″ per month
D. 1 1/2″ per month
Preview next quiz:
The muscle that causes hair to stand on end when a person is scared or cold is known as the:
A. cuticle
B. papilla
C. medulla
D. arrector pili
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