Students were asked to identify the type of muscle tissue that makes up the arrector pili, a structure that moves the hair relative to the skin. Which of the following correctly identified the muscle tissue type?
A) David stated that it is smooth muscle, eliminating cardiac muscle because the tissue is not located in the heart and skeletal muscle because it is not under voluntary control.
B) Sally stated that it is cardiac muscle, eliminating smooth muscle because it is not associated with blood vessels and skeletal muscle because it is not attached to bones.
C) Hannah stated that it is skeletal muscle, eliminating cardiac muscle because it is not located in the heart and smooth muscle because it is not part of blood vessels.

Question

Quizplus · Accepted Answer

The arrector pili muscles are composed of smooth muscle tissue. These muscles are responsible for causing hairs to stand up when they contract, a reaction often associated with cold or fear, and this process is not under voluntary control, distinguishing it from skeletal muscle. Additionally, these muscles are not part of the heart, which is the location of cardiac muscle.

Students Were Asked to Identify the Type of Muscle Tissue