How is sperm production regulated

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Sperm production is hormonally driven. Brain hormones govern sperm production and are precisely controlled. The male genitalia are responsible for sperm and ejaculate production. Within the brain, the hypothalamus and anterior pituitary control sperm production. 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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Sperm production is hormonally driven. Brain hormones govern sperm production and are precisely controlled. The male genitalia are responsible for sperm. The onset of puberty is controlled by two major hormones: FSH initiates If the sperm count reaches 20 million/ml, the Sertoli cells cease the release of inhibin.
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The external structures of the male reproductive system are the penis, the scrotum and the testicles. Penis — The penis is the male organ for sexual intercourse.
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In the nematode C. As a result, researchers have been able to use a broad range of genetic and genomic techniques to dissect all aspects of sperm development and function. Their results show that the early stages of spermatogenesis are controlled by transcriptional and translational processes, but later stages are dominated by protein kinases and phosphatases. Once spermatids are produced, they participate in many interactions with other cells — signals from the somatic gonad determine when sperm activate and begin to crawl, signals from the female reproductive tissues guide the sperm, and signals from sperm stimulate oocytes to mature and be ovulated. The sperm also show strong competitive interactions with other sperm and oocytes. Some of the molecules that mediate these processes have conserved functions in animal sperm, others are conserved proteins that have been adapted for new roles in nematode sperm, and some are novel proteins that provide insights into evolutionary change.
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Comments
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    Testosterone is essential for maintaining spermatogenesis and male fertility.

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    Not used until the 16th century, and then only rather rarely; they first

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