The male testicle is like a “factory” for sperm production, and the seminiferous tubules inside the testicle are like a “production line” for sperm production. Inside the tubules, sperm production begins with the development of the primitive spermatogonia to the primary spermatocytes, to the secondary spermatocytes, to the spermatids, and finally to the mature spermatozoa, which takes more than 60 days. The sperm produced in the testes are only morphologically mature, but functionally, the sperm need to remain in the epididymis for about 2-3 more weeks before they finally gain the ability to move and fertilize and become mature sperm in the true sense of the word. Overall, it takes about nearly 90 days for a primitive spermatogonia to develop into a mature spermatozoa. The sperm factory, the testes, is very productive, with an average of about 1,000 sperms being produced every second, and the sperms are then transported to the “warehouse” where they are stored, the epididymis. -The epididymis. Sperm is mainly stored in the tail of the epididymis before ejaculation, when men reach orgasm, the tail of the epididymis, vas deferens and ejaculatory ducts of the smooth muscle coordinated rhythmic contraction of the sperm and the epididymal ducts and vas deferens fluid through the ejaculatory ducts injected directly into the back of the urethra, and at the same time, peristaltic contraction of the vesicles occurred a number of times, will be discharged into the back of the urethra, it is discharged with a urethral sperm washout effect. At this time, the prostate smooth muscle contraction also occurs, so that the prostate fluid discharge, and ultimately through this series of reflex action and perineal muscles coordinated contraction of semen through the urethra out of the body, to complete the entire ejaculation process. Semen is mainly composed of spermatozoa and seminal plasma (mainly including seminal vesicle fluid and prostate fluid), but before ejaculation, these three parts are separate from each other.