★ Trichology 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
Preview next quiz:
Hair is made up of a protein, what is this protein called?
A. Coronin
B. Gloverin
C. Keratin
D. Myosin
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