TLS Online TPP Program

#Id: 6582

#Unit 7. System Physiology – Animal

Sertoli cells secrete 

Androgenbinding protein (ABP), inhibin, and MIS

The fluid in the lumen of the seminiferous tubules is quite different from plasma; it contains very little protein and glucose but is rich in androgens, estrogens, K+ , inositol, glutamic and aspartic acids.  Maintenance of its composition depends on the blood–testis barrier.

TLS Online TPP Program

#Id: 6583

#Unit 7. System Physiology – Animal

During adolescence, Spermatogonia, mature into primary spermatocytes 

TLS Online TPP Program

#Id: 6584

#Unit 7. System Physiology – Animal

TLS Online TPP Program

#Id: 6585

#Unit 7. System Physiology – Animal

The membranes of late spermatids and spermatozoa contain a special small form of angiotensin converting enzyme called germinal angiotensin converting enzyme (gACE)

TLS Online TPP Program

#Id: 6586

#Unit 7. System Physiology – Animal

Hormonal factors that stimulate spermatogenesis:

Testosterone

Luteinizing hormone

Follicle-stimulating hormone

Estrogens

Growth hormone

TLS Online TPP Program

#Id: 6587

#Unit 7. System Physiology – Animal

Testosterone, secreted by the Leydig cells located in the interstitium of the testis, is essential for growth and division of the testicular germinal cells.