Complete the table with adult male reproductive hormone signaling information. GnRH FSH LH testosterone Stimulus Source...

Complete the table with adult male reproductive hormone signaling information.

	GnRH	FSH	LH	testosterone
Stimulus
Source
Target
Action
Regulation of hormone

Solutions

Expert Solution

Hormone	Stimulus	Source	Target	Action
GnRH	Kisspeptin Signalling	GnRH neurones of hypothalamus	anterior pituitary gland (Gonadotroph cells)	Stimulates the secretion of FSH and LH
FSH	GnRH	gonadotropic cells of the anterior pituitary gland	Sertoli cells (in males), Ovarian follicular cells, granulosa cells (in females)	Maturation of primordial germ cells, Induces Sertoli cells to secrete ABP, Initiates follicular growth in the ovaries
LH	GnRH	gonadotropic cells of the anterior pituitary gland	Leydig cells (in males), ovarian follicular cells (in females)	Ovulation (LH surge), production of Testosterone and estrogen
Testosterone	FSH and LH (mainly)	Leydig cells in the testis	Male primary and secondary sex organs, muscles, vocal cord etc.	development of male reproductive tissues (Testis, prostate etc), secondary sexual characteristic (increased muscles, bone mass and beard), regulates fertility (sperm production)

regulation of these hormones are related to each other. They either regulate the production of one another in feedback mechanism (positive or negative). GnRH helps in secretion of FSH and LH and these two again leads to production of testosterone and estrogen. Testosterone and estrogen suppress the further production of GnRH (along with FSH and LH) in feed back mechanic. It has also been shown that estrogen helps in production of LH causing LH surge (positive feedback).

gladiator answered 1 year ago

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