The small involuntary muscles that are attached to hair and cause "goose bumps" when they contract are _____ muscles.
A) cutaneous arrector
B) follicular arrector
C) arrector pili
D) dermal arrector

Question

Quizplus · Accepted Answer

The small involuntary muscles that are attached to hair and cause "goose bumps" are called arrector pili muscles, also known as piloerector muscles. They are responsible for making the hair follicle stand upright, and when they contract, they pull on the hair follicle, causing bumps to appear on the skin's surface. Cutaneous arrector and dermal arrector are not terms used to describe these muscles. Follicular arrector may be a possible alternative term, but arrector pili is the more commonly used and recognized term.

The Small Involuntary Muscles That Are Attached to Hair and Cause