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Midphalangeal hair, or the presence/absence of hair on the middle phalanx of the ring finger, is one of the most widely studied markers in classical genetics of human populations. Although this polymorphism was observed at other fingers as well, for this kind of research, the fourth finger of the hand has been conventionally selected.
Terminal hair growth on arms is a secondary sexual characteristic in boys and appears in the last stages of puberty. Vellus arm hair is usually concentrated on the elbow end of the forearm and often ends on the lower part of the upper arm. This type of intense arm vellus hair growth sometimes occurs in girls and children of both sexes until ...
Hair is a protein filament that grows from follicles found in the dermis. ... On the human body, glabrous skin is found on the ventral portion of the fingers, palms, ...
The structure, consisting of hair, hair follicles, arrector pili muscles, and sebaceous glands, is an epidermal invagination known as a pilosebaceous unit. [ 4 ] Sebaceous glands are also found in hairless areas ( glabrous skin ) of the eyelids , nose , penis , labia minora , the inner mucosal membrane of the cheek , and nipples . [ 4 ]
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 ...
The hair at the end of their trunks is super sensitive- almost like cat whiskers. They can use the senses in these hairs to locate food and to sense where the rest of the herd is so they can stay ...
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The single most important purpose for me being on this planet is for them! So whatever the aftermath on my body, well bring it on! “There have been times I have stood in my closet and just cried.