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Body hair or androgenic hair is terminal hair that develops on the human body during and after puberty. It is different from head hair and also from less visible vellus hair, which is much finer and lighter in colour. Growth of androgenic hair is related to the level of androgens (male hormones) and the density of androgen receptors in the ...
Growth of body hair, including underarm, abdominal, chest, and pubic hair. [4] [1] Growth of facial hair. [1] Enlargement of the larynx (Adam's apple) and deepening of the voice. [1] [24] Increased stature; adult males are taller than adult females, on average. [1] Heavier skull and bone structure. [1] Increased muscle mass and strength. [1]
Some differences in human appearance are genetic, others are the result of age, lifestyle or disease, and many are the result of personal adornment. Some people have linked some differences with ethnicity, such as skeletal shape, prognathism or elongated stride. Different cultures place different degrees of emphasis on physical appearance and ...
Scalp hair was reported to grow between 0.6 cm and 3.36 cm per month. The growth rate of scalp hair somewhat depends on age (hair tends to grow more slowly with age), sex, and ethnicity. [ 3 ] Thicker hair (>60 μm) grows generally faster (11.4 mm per month) than thinner (20–30 μm) hair (7.6 mm per month).
This trait is determined by the hair follicle volume and the condition of the strand. [27] Fine hair has the smallest circumference, coarse hair has the largest circumference, and medium hair is anywhere between the other two. [27] Coarse hair has a more open cuticle than thin or medium hair causing it to be the most porous. [27]
Vellus hair replaces lanugo hair on a human fetus at 36 to 40 weeks of gestation. [2] The growth cycle of vellus hair is different from the growth cycle of terminal hair. At puberty, androgen hormones cause much of the vellus hair to turn into terminal hair and stimulate the growth of new hair in the armpit and the pubic area. In men, this ...
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[2]: 70 [1]: 119 Finger work involves initially lifting the hair to be cut with the comb, then grasping the lifted hair between the index and middle finger of the opposite hand while transferring the comb to that hand and cutting it with the shears held in the hand that initially held the comb. The comb is then transferred back to the hand that ...
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