The contraction of the arrector pili
A) pulls the follicle into a more perpendicular position in relation to the skin surface
B) pulls the follicle into a more oblique angle in relation to the skin surface
C) does not affect the position of the hair relative to the epidermis.

Question

Quizplus · Accepted Answer

The contraction of the arrector pili muscle pulls the hair follicle into a more perpendicular position in relation to the skin surface, which is what causes the hair to stand up in a phenomenon often referred to as "goosebumps."

The Contraction of the Arrector Pili