arrector muscle of hair

arrector pili muscle musculus arrector pili.

Medical dictionary. 2011.

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  • Muscle — is the tissue of the body which primarily functions as a source of power. There are three types of muscle in the body. Muscle which is responsible for moving extremities and external areas of the body is called "skeletal muscle." Heart… …   Medical dictionary

  • arrector pili muscle — arrector pi·li muscle pī .lī , pil ē n one of the small fan shaped smooth muscles associated with the base of each hair that contract when the body surface is chilled and erect the hairs, compress an oil gland above each muscle, and produce the… …   Medical dictionary

  • Hair — For other uses, see Hair (disambiguation). Hairy redirects here. For individuals nicknamed the Hairy , see List of people known as the Hairy. Hair Cross section of a hair Latin unguis …   Wikipedia

  • Hair follicle — A hair follicle is part of the skin that grows hair by packing old cells together. Attached to the follicle is a sebaceous gland, a tiny sebum producing gland found everywhere except on the palms, lips and soles of the feet. The thicker density… …   Wikipedia

  • Arrector pili — A microscopic band of muscle tissue which connects a hair follicle to the dermis. When stimulated, the arrector pili will contract and cause the hair to become more perpendicular to the skin surface (stand on end). * * * pl. arrectoґres piloґrum… …   Medical dictionary

  • Muscle — For other uses of Muscle , see Muscle (disambiguation). A top down view of skeletal muscle Muscle (from Latin …   Wikipedia

  • musculus arrector pili — [TA] arrector pili muscle: a type of tiny smooth muscle of the skin whose contraction causes the hair to stand erect with cutis anserina (goose flesh). origin, papillary layer of dermis; insertion, a hair follicle; innervation, sympathetic;… …   Medical dictionary

  • Cuticle (hair) — The hair cuticle is the outermost part of the hair shaft.[1] It is a hard shingle like layer of overlapping cells, some five to twelve deep. It is formed from dead cells which form scales that gives the hair shaft strength and do the best job of… …   Wikipedia

  • Cortex (hair) — The cortex of the hair shaft is located between the hair cuticle and medulla.[1] References ^ James, William; Berger, Timothy; Elston, Dirk (2005) Andrews Diseases of the Skin: Clinical Dermatology (10th ed.). Saunders. Page 8. ISBN 0 7216 2921 0 …   Wikipedia

  • Matrix (hair) — The hair matrix produces the actual hair shaft as well as the inner and outer root sheaths.[1] References ^ James, William; Berger, Timothy; Elston, Dirk (2005) Andrews Diseases of the Skin: Clinical Dermatology (10th ed.). Saunders. Page 8. ISBN …   Wikipedia


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