When these muscles contract (during cold or fright), the slanted hair follicle is pulled upright, dimpling the skin surface with goosebumps. what are these muscles called?

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01-09-2022
Biology

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When these muscles contract (during cold or fright), the slanted hair follicle is pulled upright, dimpling the skin surface with goosebumps. what are these muscles called?

Sagot :

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Yakavi Yakavi · Answer 1 · 2022-09-10T01:37:43-04:00

The muscles that contract (during cold or fright), the slanted hair follicle is pulled upright, dimpling the skin surface with goosebumps are called arrector pili muscle.

The arrector pili muscle are tiny muscle that attaches to the base of the hair follicle at one end and to the dermal tissue on the other end. When the body feels cold or fright the body generate heat and the arrector pili muscle contract all at once, that causes goosebumps on the skin.

The arrector pili muscle acts as the thermoregulator. Straight stand hair increases air trapping, so that the heat loss from the body decreases. The arrector pili muscle are mediated by the sympathetic nervous system.

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AnnuG AnnuG · Answer 2 · 2022-09-12T16:06:06-04:00

When arrector pili muscles contract (during cold or fright), the slanted hair follicle is pulled upright, dimpling the skin surface with goosebumps.

The arrector pili muscles attaches to the base of the hair and also to the dermal tissue from both the ends. When goosebumps appear, this action takes place due to the contract of these muscles. These muscles are triggered by the norepinephrine.

Hair follicle is a tube-like pore surrounding the root of the hair. These follicles are responsible for the hair growth. Various hormones, neuropeptides and immune cells are involved in this process of hair growth.

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When these muscles contract (during cold or fright), the slanted hair follicle is pulled upright, dimpling the skin surface with goosebumps. what are these muscles called?

Sagot :

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