Changes

[[Image:spermatogenesis.jpg|thumb|right|150px|Spermatogenesis Copyright Amy Cartmel 2008]]

[[Image:spermatogenesis.jpg|thumb|right|150px|Spermatogenesis Copyright Amy Cartmel 2008]]

*Spermatogenesis occurs in the Seminipherous tubules of the testes.  

*Spermatogenesis occurs in the seminipherous tubules of the testes.  

*Sertoli cells found within the seminipherous tubules play a vital role in the production of gametes. Sertoli cells are support cell within the seminipherous tubules. They are anchored to the basement membrane and reach all the way to the lumen of the tubules.  The junctional complexes between neighbouring sertoli cells make up the ‘’’blood-testes barrier’’’ which prevents autoimmune reactions against haploid spermatids and spermatozoa by providing an immunologically privileged site. The blood-testes barrier splits the seminipherous epithelium into two main sections; the basal compartment where spermatogonia develop and the adluminal compartment where spermatocytes, spermatids and spermatozoa develop.

*Sertoli cells found within the seminipherous tubules play a vital role in the production of gametes. Sertoli cells are support cells within the seminipherous tubules. They are anchored to the basement membrane and reach all the way to the lumen of the tubules.  The junctional complexes between neighbouring sertoli cells make up the ‘’’blood-testes barrier’’’ which prevents autoimmune reactions against haploid spermatids and spermatozoa by providing an immunologically privileged site. The blood-testes barrier splits the seminipherous epithelium into two main sections; the basal compartment where spermatogonia develop and the adluminal compartment where spermatocytes, spermatids and spermatozoa develop.

*Spermatogenesis occurs in three phases:

*Spermatogenesis occurs in three phases:

**'''Proliferation''' - Spermatogonia undergo many mitotic divisions in order to maintain the spermatogonia population in order for spermatogenesis to be continuously producing sperm.  

**'''Proliferation''' - Spermatogonia undergo many mitotic divisions in order to maintain the spermatogonia population in order for spermatogenesis to be continuously producing sperm.  

**'''Meiosis''' -  

**'''Meiosis''' -  

**'''Differenciation''' -

**'''Differentiation''' -

==Hormonal Control of Spermatogenesis==

==Hormonal Control of Spermatogenesis==