Question

multiple choice question
contractions of which muscle cause \goosebumps\?

flexor

arrector

extensor

digitalis

Explanation:

Goosebumps are triggered by the contraction of small muscles attached to hair follicles. The arrector (full name arrector pili) muscles pull hair follicles upright, creating the raised "goosebump" skin texture, often in response to cold or strong emotions. The other options refer to muscles with different functions: flexors and extensors control limb movement, and digitalis is a cardiac medication, not a muscle.

Answer:

B. arrector