What is the function of the arrector pili muscle, and how is their function temperature dependent?
o Attached to the hair sheath.
o Function is temperature-dependent; cold temperatures stimulate contraction of the muscle, causing erection of the hair, and thereby increasing thickness of the insulating air next to the skin and resulting in heat conservation; Warm temperatures cause the muscle to relax, allowing the hair to lie flat, reducing the thickness of the air layer and permitting heat loss.
o The emotional attitude of mammals also can be signaled through hair attitude; For example, frightened or angry cats and dogs often exhibit erect hair and an arched back.
Answers First: Get answers or Ask questions on subjects like Education, Technology, Social, LifeStyle and more.

- Please comment if you find a different answer.
Post a Comment
Post a Comment