Maturation of the sperm

Maturation of the sperm
After the sperm produces in the thin precise tube of song of the testis, by the look of shape, has already formed tadpole's sperm, but been proved by the experiment, the sperm in the testis is not capable of fertilizing. Testis sperm need, go through the intersection of sperm and maturation, go through course of can obtaining in the the intersection of reproduction and line in women in epididymis still.
Running goes through a series of complicated change in the course in the sperm is in the long epididymis of 4-6 meters. The sperm is in the ripe course, the volume is slightly diminished, water content is reduced. The most obvious change is that the afterbirth thick liquid blob of the ripe sperm's body department is moved backward, and take off finally. In some sterile patients' seminal fluid, can see the ripe sperm not taking off the thick liquid blob of the afterbirth in a large amount.
The sperm coming out in the testis can move, but after entering the first section of epididymis, namely lose the circulation. The sperm has obtained the circulation progressively while operated in the epididymis. Swing where it is first, then there are turn-taking sports, to sports before there is a ripe sperm's characterized swing type finally. So, observe sperm movement way and is it a ripe index to weigh sperms.
In addition, while the sperm is ripe, film of sperm is penetrating to change, such as to the penetrating increase of potassium ion, the function of arranging sodium has appeared, this has important influence on enzyme vigor and supersession. Sperm negative electric charge of surface increases while the epididymis moves, this can enable sperms while storing in the epididymis, the function of repelling each other because of the same sex of electric charge is unlikely to be agglutinate become the group.
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