The structure responsible for actually pulling on the follicle and causing "goose bumps" is the
A)external root sheath.
B)internal root sheath.
C)epithelial root sheath.
D)arrector pili muscle.
E)papilla.

Question

Quizplus · Accepted Answer

The arrector pili muscle is a small bundle of smooth muscle fibers that attach to the base of each hair follicle and the dermal tissue. When this muscle contracts, it causes the hair to stand on end, creating the characteristic "goosebumps" or "piloerection" sensation.

The Structure Responsible for Actually Pulling on the Follicle and Causing