Sperm made in men
Sperm production is hormonally driven. Brain hormones govern sperm production and are precisely controlled. The hypothalamus secretes gonadotropin-releasing hormone GnRH , which acts on the anterior pituitary gland, stimulating it to release follicle stimulating hormone FSH and leutinizing hormone LH. FSH and LH are released into the bloodstream and act only on the testes to encourage spermatogenesis within seminiferous tubules action of FSH and testosterone production by neighboring Leydig cells action of LH between the seminiferous tubules Figure 1.
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Ejaculation , the release of sperm cells and seminal plasma from the male reproductive system. Ejaculation takes place in two phases: in the first, or emission, stage, sperm are moved from the testes and the epididymis where the sperm are stored to the beginning of the urethra , a hollow tube running through the penis that transports either sperm or urine; in the second stage, ejaculation proper, the semen is moved through the urethra and expelled from the body. Sperm cells that are stored in the male body are not capable of self-movement because of the acidity of the accompanying fluids. When the sperm receive fluids, called seminal plasma , from the various internal accessory organs prostate gland , ejaculatory ducts , seminal vesicles , and bulbourethral glands , the acidity decreases. As they leave the body, the sperm receive oxygen , which is vital to motility. Unable to leave the male body by their own motivation, the sperm cells are transported by muscular contractions.
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We include products we think are useful for our readers. If you buy through links on this page, we may earn a small commission. You produce sperm every day, but a full sperm regeneration cycle spermatogenesis takes about 64 days. Spermatogenesis is the complete cycle of sperm production and maturation.
The testes are where sperm are produced. The testes are linked to the rest of the male reproductive organs by the vas deferens, which extends over the base of the pelvic bone or ilium, and wraps around to the ampulla, seminal vesicle, and prostate. The urethra then runs from the bladder through the penis.