Hair growth is effected by multiplication of the generative cells of the root, the mitotic activity of which varies from one cycle to another. The average growth of the scalp hair, which is faster than that of hair elsewhere, is from 0.35 to 0.45 mm/24 h, i.e. over 1 cm a month. ...
Physiology of the vellus hair follicle: hair growth and sebum excretion. Br. J. Dermatol. 1991; 124 :21–28.BLUME U, FERRACIN J, VERSCHOORE M, CZERNIELEWSKI JM, AND SCHAEFER H. Physiology of the vellus hair follicle: hair growth and sebum excretion. Br J Dermatol 124: 21-28, 1991....
PHYSIOLOGY OF HUMAN HAIR 来自 Semantic Scholar 喜欢 0 阅读量: 23 作者: CH Danforth 摘要: Human hair is morphologically closely comparable to that of other mammals, but despite rather extraordinary regional specializations the range of hair forms is limited. For example, erectile tactile hairs, ...
On the scalp hair, melatonin can mediate several positive actions on normal hair growth, e. g. promoting the anagen phase. Furthermore, melatonin may have anti-apoptotic properties for residual hair follicle cells by attenuation of oxidative stress. Clinical studies have shown that melatonin can ...
has been completed, initiates the cell expansion phase in figs and possibly other fruits with sigmoidal growth curves producing isodiametric cells, causes an increased cell size in fern gametophytes, stimulates root hair formation, and enhances growth in certain tissue cultures and in pollen tubes....
Here again this is a very personal issue. But, one thing is for sure, running shorts and excess hair are not very flattering. The problem is that getting rid of unwanted hair, be it with a razor, bikini wax or other, together with the combination of sweat makes the skin prone to rash...
Puberty, in human physiology, the stage or period of life when a child transforms into an adult normally capable of procreation. A brief treatment of puberty follows. (See also adolescence.) Because of genetic, environmental, and other factors, the timin
Physiology - Regulation, Homeostasis, Control: The concept of internal regulations is attributed to Claude Bernard, who thought of blood as an internal environment in which cells function; according to Bernard, maintenance of the internal environment at
Figure 2.Feedback processes in plant–soil interactions. Changes in plant growth, physiology, and so forth, and changes in plant community composition can alter soil properties, which in turn will drive further changes to the plants. Conversely, soil properties that constrain the patterns of plant...
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