enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Goose bumps - Wikipedia

    en.wikipedia.org/wiki/Goose_bumps

    Goose bumps are created when tiny muscles at the base of each hair, known as arrector pili muscles, contract and pull the hair straight up. The reflex is started by the sympathetic nervous system, which is responsible for many fight-or-flight responses. The muscle cells connected to the hair follicle have been visualized by actin ...

  3. Arrector pili muscle - Wikipedia

    en.wikipedia.org/wiki/Arrector_pili_muscle

    The arrector pili muscles, also known as hair erector muscles, [1] are small muscles attached to hair follicles in mammals. Contraction of these muscles causes the hairs to stand on end, [ 2 ] known colloquially as goose bumps (piloerection).

  4. Human vestigiality - Wikipedia

    en.wikipedia.org/wiki/Human_vestigiality

    Goose bumps are an example of a vestigial human reaction to stress. The formation of goose bumps in humans under stress is a vestigial reflex; a possible function in the distant evolutionary ancestors of humanity was to raise the body's hair, making the ancestor appear larger and scaring off predators.

  5. Why Do We Get Goosebumps? - AOL

    www.aol.com/why-goosebumps-211600084.html

    Horripilation is the technical term for goosebumps. Goosebumps have a practical purpose for animals. ... That happens when tiny muscles tighten up and make the hair on our skin stand upright.

  6. Why do we get goosebumps? Experts explain - AOL

    www.aol.com/lifestyle/why-goosebumps-experts...

    For premium support please call: 800-290-4726 more ways to reach us

  7. Experts Explain the Wild Reason We Get Goosebumps - AOL

    www.aol.com/experts-explain-wild-reason...

    Need help? Call us! 800-290-4726 Login / Join. Mail

  8. Vestigiality - Wikipedia

    en.wikipedia.org/wiki/Vestigiality

    The formation of goose bumps in humans under stress is a vestigial reflex; [31] its function in human ancestors was to raise the body's hair, making the ancestor appear larger and scaring off predators. The arrector pili (muscle that connects the hair follicle to connective tissue) contracts and creates goosebumps on skin. [32]

  9. Vestigial response - Wikipedia

    en.wikipedia.org/wiki/Vestigial_response

    The sudden startled arm-jerking response sometimes experienced when on the verge of sleeping is known as the hypnic jerk.. The evolutionary explanation for the existence of the hypnic jerk is unclear, but a possibility is that it is a vestigial reflex humans evolved when they usually slept in trees.