Ejaculation is a reflection process.The first is the contraction of the tube output tubules, then the epididymal head, body, and then contraction at the end of the epididymis.Sperm drives into the abdomen of the vastery pipe through the vascular tube. Finally, the prostate seminal gland is emptied, and the sperm and semi -slurry are driven into the urethra.
With the contraction of the sponge body muscles and sciatic sponge body muscles, it also depends on the closure of the bladder neck to prevent the semen retrograde from shooting towards the bladder, which makes the semen rhythmically ejaculate from the urethra.
It is generally believed that there are seven powerful and rhythmic contraction movements.We can artificially divide the ejaculation process into two sections, the first three sections. This part of the semen mainly comes from the prostate.The rest are a paragraph, mainly from the seminal gland.Generally speaking, the first part of the sperm is much higher than the second part in terms of density, activity, activity, survival rate, or membrane stability.
According to statistics, 89 % of men's first part of sperm count is higher than the second part, two are the same as those with 5 %, and the second part is greater than the first part accounted for 6 %.
The segmented ejaculation method has a lot of clinical significance in treating male infertility.If the patient's sperm count and activity rate is low, or at the same time, the semen is too sticky and the amount of semen is too large, the segmented ejaculation method can be used during the sexual intercourse during the women's ovulation.
When the first semen is ejected, the penis is pulled out of the vagina immediately to shoot the remaining semen outside. This can prevent the semen of the semen secretion of the semen gland, thereby ensuring that high density, high -quality, and vibrant sperm stay in the vagina in the vagina., Improve the ability to conceive.
In the practice of "artificial insemination" and "test tube baby", segmented ejaculation has also become a conventional step.After the first semen is treated, the high -vitality sperm is screened, sent to the uterus or used in the body fertilization.
In the clinical biochemical test, the 4-6 part can also be collected according to the order of the ejaculated semen. The first part is mainly from prostate fluid, and the acid phosphatase is the highest.Finally, the seminal gland fluid, the highest prostaglandin and fructose.By determining these special enzymes or substances, you can understand the function of the adhesive glands.
(Editor in charge: Intern Wang Yanan)
