The testis produced the course of the sperm
The cover has two kinds of cells on the thin precise tube of song of the male testis: One kind calls meticulous afterbirth, can develop into a sperm; One kind is called supporting cells, there is function of supporting and meticulous afterbirth of nutrition.The sperm is man's ripe reproduction cells, their development was begun by unripe precise original cells. Precise original cells are split many times and the volume increases, become the precise master cell, the latter splits, become sperm's cells, develop into the ripe sperm finally, namely: Precise original cells - precise master cells - sperm's cells - sperms.After the sperm is ripe, takes off in the thin precise tube of song, move the conduct to the epididymis slowly, a part is stored here, the majority moves the conduct to store in spermatic duct and pot belly again, is discharged when ejaculation.The sperm is in the course of taking shape, suitable for needinging and relatively invariable environment, and the temperature is an important condition that the sperm produces. This kind is suitable for the contracting to regulate easily of the scrotum and rely on as to the invariable ambient temperature. When the external temperature increases, the scrotum expands heat-dissipating area in order to lower the temperature on relaxation; On the contrary, when the external temperature is reduced, the scrotum shrinks in order to keep warm. By this kind of regulation, the temperature within the scrotum keeps lower than 1.5- 2.0 of abdominal cavity.It is a continuous course that the human sperm happens, have sperms to produce all the time, that is to say in the body having ripe sperm exist at any time, this, and woman only one ripe and obviously different ovum in every month.Adult each the intersection of testis and organization produce 10 million sperm nearly each day, both sides about 30- 40 gram in weight testis have, so sperm that produce can reach several hundred million every day.
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