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67821. Anatomical terms of muscle. [ edit on Wikidata] 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). [ 3]
Underarm or axillary hair goes through four stages of development, driven by weak androgens produced by the adrenal in males and females during adrenarche, and testosterone from the testicle in males during puberty. [ 2] The importance of human underarm hair is unclear. It may naturally wick sweat or other moisture away from the skin, aiding ...
Axilla. The axilla ( pl.: axillae or axillas; also known as the armpit, underarm or oxter) is the area on the human body directly under the shoulder joint. It includes the axillary space, an anatomical space within the shoulder girdle between the arm and the thoracic cage, bounded superiorly by the imaginary plane between the superior borders ...
Hereditary hair loss is inherited and causes hair follicles—which hair grows out of—to shrink and, eventually, to stop growing hair, per the American Academy of Dermatology (AAD).
Minoxidil was the most effective of the three. So, if you’re looking for proven hair loss treatments, minoxidil (or finasteride, for that matter) is definitely a better bet than ketoconazole ...
Anticoagulants and Hair Loss. If you’ve been prescribed medication to prevent blood clots, you’re taking anticoagulants, or blood thinners — and telogen effluvium hair loss is a well-known ...
The iris dilator and sphincter muscles are contained in the iris and contract in order to dilate or constrict the pupils. The ciliary muscles change the shape of the lens to focus on objects in accommodation. In the skin, smooth muscle cells such as those of the arrector pili cause hair to stand erect in response to cold temperature and fear. [1]
The removal of armpit and leg hair by American women became a new practice in the early 20th century due to a confluence of multiple factors. One cultural change was the definition of femininity. In the Victorian era, it was based on moral character. This shifted in the early 1920s when the new feminine idea became based on the body. [ 4]