HISTOLOGY
INTEGUMENTARY SYSTEM SKIN
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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epidermis
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hypodermis
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dermis
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none of the above
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Detailed explanation-1: -Goosebumps occur when tiny muscles in our skin’s hair follicles, called arrector pili muscles, pull hair upright. For animals with thick fur, this response helps keep them warm.
Detailed explanation-2: -Goosebumps are the result of tiny muscles flexing in the skin, making hair follicles rise up a bit. This causes hairs to stand up. Goosebumps are an involuntary reaction: nerves from the sympathetic nervous system-the nerves that control the fight or flight response-control these skin muscles.
Detailed explanation-3: -An arrector pili muscle originates from the dermis and inserts into the hair follicle at the bulge. Contraction of this smooth muscle, under sympathetic control, causes hair to become erect and also compresses an associated sebaceous gland which secretes its sebum onto the shaft.