★ Cosmetology Quiz
In the makeup of normal human hair, what COHNS element is present in the lowest percentage?
A. Nitrogen
B. Sulfur
C. Hydrogen
D. Oxygen
Preview next quiz:
What small involuntary muscle is attached to the underside of a hair follicle?
a. arrector pili
b. hair bulb
c. dermal papilla
d. hair strand
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