Ovaries Endocrine Function - Anatomy & Physiology

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Reproductive hormones tend to have short half lives and act in minute quantities. They bind to specific receptors on their target organs. Oestrus Cycle

Hormones of the Testes

Hormone	Produced by	Regulation	Action
Oestrogen		GnRH from the Hypothalamus causes LH secretion from the Pituitary Gland which stimulates the Leydig Cells.	This hormone controls and maintains the growth and functions of the reproductive organs. It enhances libido and is essential for spermatogenesis.
Progesterone	Sertoli Cells	GnRH from the Hypothalamus causes FSH secretion from the Pituitary Gland which stimulates the Sertoli Cells.	Prevents secretion of further FSH from the Pituitary Gland.
Inhibin	Sertoli Cells	GnRH from the Hypothalamus causes FSH secretion from the Pituitary Gland which stimulates the Sertoli Cells.	Converted from testosterone, this hormone's function is complex. It may prevent apoptosis of male germ cells.
Relaxin	Sertoli Cells	GnRH from the Hypothalamus causes FSH secretion from the Pituitary Gland which stimulates the Sertoli Cells.	Converted from testosterone, this hormone's function is complex. It may prevent apoptosis of male germ cells.
[[Endocrine System -	Sertoli Cells	GnRH from the Hypothalamus causes FSH secretion from the Pituitary Gland which stimulates the Sertoli Cells.	Converted from testosterone, this hormone's function is complex. It may prevent apoptosis of male germ cells.