Doctor Ke:
We are group of middle-school students, starts to study some physiological knowledge. In some magazines, our Chang seedao said the male is bigger than, muscularly the feminine stature, and so on, these all are the masculine characteristic. But we make not the clear truth, please explain?
Zhejiang warm ××
In the human body growth different stage, the girl certainly not all is actually shorter than the same age boy. If in the puberty growth first several years, the girl average height on wants high somewhat compared to the same age boy, but along with the growth maturity, boy's average height can be higher than the same age girl. Truth lies in the role which the feminine estrin plays to be the result of. Starts after the puberty growth, girl in vivo estrin obvious increase. Because the estrin has the promotion skeleton growth function, therefore in the puberty first several years, girl's average height compared to the is same age boy to appear high. On the other hand, the estrin also has the promotion long bone bone end bone epiphysis closed function, the bone epiphysis as soon as passes through closed, the skeleton cannot again grow, the body also stopped long being high. Thus it can be seen, because feminine bone epiphysis early closed, therefore the adult female height is generally lower than the male. As for male muscular, this had to give credit to has the promotion muscle growth the function.
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