These are the muscles that make your hair stand up.... goose bumps, anyone?
The arrector pilli does not cause shivering - it's responsible for "goosebumps".. shivering is caused by skeletal-muscles..
arrector pilli
Goosebumps are caused by little muscles called the arrectores pilorum (the hair erector muscles). Contraction of these muscles elevates the hair follicles above the rest of the skin. And it is these tiny elevations we perceive as goose bumps. Source: http://www.medicinenet.com/script/main/art.asp?articlekey=6842
The muscles are called arrector pili and they pull the hair upright for both of those reasons and a few others.. let me know if you want to know more :)
The arrector pili muscles are activated primarily by cold temperatures and emotional responses, such as fear or anxiety. When exposed to cold, these muscles contract to help retain body heat by causing hair to stand on end, creating an insulating layer. In response to strong emotions, the contraction can lead to "goosebumps," serving as a reflexive mechanism tied to the body's fight-or-flight response.
arrector pilli
Yes, the arrector pili muscles contribute to maintaining skin tone. These small muscles are attached to hair follicles and contract in response to various stimuli, causing the hair to stand on end and the skin to form "goosebumps." This contraction helps to firm the skin and provide support.
tiny muscle fibers attached to each hair follicle, which contract to make the hairs stand on end, causing goose bumps.
Arrector pilli. Humans do not have enough hair left to raise in trapping heat under a good layer of hair, so now this response just tells us we are too cold, or that danger is eminent.
Right next to the bottom of a hair in the dermis layer of the skin. (It's not in the hair of the head or the private parts).
Lilli Pilli Football Club was created in 1961.
Pilli is cat in Telugu.