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Reproductive Hormones Overview - Anatomy & Physiology (view source)
Revision as of 15:43, 25 August 2011
, 15:43, 25 August 2011→Follicle Stimulating Hormone (FSH)
===Follicle Stimulating Hormone (FSH)===
===Follicle Stimulating Hormone (FSH)===
FSH is a type of glycoprotein that is produced in the '''Anterior Pituitary''' via '''gonadotroph cells'''. Their target tissue in males are '''Sertoli cells''' within the testes and in the female '''Granulosa cells''' of the ovary. In the male FSH stimulates the secretion of '''inhibin''' which has a negative feedback directly in the anterior pituitary, whilst in the female it stimulates follicular development and oestradiol synthesis.
FSH is a type of glycoprotein that is produced in the '''anterior pituitary''' via '''gonadotroph cells'''. FSH secretion is regulated by GnRH from the hypothalamus. The target tissue of FSH in males are the '''sertoli cells''' within the testes and in the female the '''granulosa cells''' of the ovary. FSH stimulates the maturation of germ cells within the testes and ovaries. In the female it also stimulates follicular development and oestradiol synthesis.
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In the male FSH also stimulates the secretion of '''inhibin''' which has a negative feedback directly to the anterior pituitary. Although GnRH is released in a pulsatile fashion and the other gonadotropic hormone LH is therefore also pulsatile, FSH concentrations do not fluctuate as much as that of LH. This is because of the added regulatory feedback mechanism of inhibin within the regulatory pathways for FSH secretion.
===Prolactin (PRL)===
===Prolactin (PRL)===
PRL is a protein that is produced from the '''Anterior Pituitary''' via '''lactotroph cells'''. In males the target tissues are the testes and the brain whilst in females the target tissue are cells located within the mammary tissues and the corpus luteum in rodents. In the male PRL induces maternal behaviour whilst it also does this in the female together with lactation and ensuring functionality of the corpora lutea in some species.
PRL is a protein that is produced from the '''Anterior Pituitary''' via '''lactotroph cells'''. In males the target tissues are the testes and the brain whilst in females the target tissue are cells located within the mammary tissues and the corpus luteum in rodents. In the male PRL induces maternal behaviour whilst it also does this in the female together with lactation and ensuring functionality of the corpora lutea in some species.