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HUMAN REPRODUCTIVE BIOLOGY QUESTION - Assignment Example

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Excess hormonal flow to target cells inhibits the producing sites to reduce secretion. Hormonal actions produce physiological responses that sometimes inhibit the further action of the same…
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HUMAN REPRODUCTIVE BIOLOGY QUESTION ASSIGNMENT
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Download file to see previous pages Increased hypothalamus functions causes secretion of follicle stimulating hormone that mark the onset of puberty (Wilkosz et al., 6). FSH stimulates ovarian follicle to secrete oestrogen and adrenal gland to secrete androgens. Sex steroid causes secondary sexual characteristics of puberty.
Sperms develop from spermatogonia mature into primary spermatocytes. Secondary spermatocytes form after first meiotic division of the primary spermatocytes. Secondary spermatocytes undergo second meiotic division to spermatids. Both divisions take place in the seminiferous tubules after which spermatids migrate to the sertoli cells (McLafferty et al., 38). Maturation of spermatids into spermatozoa involves leydig cells that produce GnRH, LH (ICSH), DHT, testosterone, ABP, and inhibin that regulate spermatogenesis.
The epididymis stores mature sperms. Upon sufficient stimulation, spermatozoa move through vas deferens, ampulla, ejaculatory duct , urethra then outside the body. The tubular pathway contracts to propel the ejaculate. Semen consist of secretions form the prostate, seminal and seminal vesicles. The secretions neutralise urine PH and provide nutrition to ...Download file to see next pagesRead More
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