Question

1. all of the following are living portions of the hair that are below the skin surface except

a. the hair bulb
b. the arrector pili muscle
c. the hair follicle
d. the dermal papillia
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Explanation:

The hair bulb, hair follicle, and dermal papilla are living parts of hair below the skin surface. The arrector pili muscle is a smooth - muscle associated with hair follicles but is not part of the hair itself.

Answer:

B. the arrector pili muscle