3.睾丸功能的调节 >下立脑-腺垂体-睾丸轴及其反馈调节 GnRH→FSH,LH→T,inhibin >局部调节 支持细胞-生精细胞-间质细胞
3. 睾丸功能的调节 ➢ 下丘脑-腺垂体-睾丸轴及其反馈调节 GnRH→FSH, LH →T, inhibin ➢ 局部调节 支持细胞-生精细胞-间质细胞
Male Physiology The hypothalamus sends a releasing hormone [gonadotropin releasing hormone,GNRH)to the anterior pituitary that causes release of follicle stimulating production of sperm.LH stimulates interstitial cells,which lie between the seminiferous tubules,to produce testosterone.Testosterone stimulates and maintains the male reproductive tract and secondary sexual characteristics,such as growth of body and facial hair, deepeningof general body proportions.It is also cells essential for spermatogenesis. Negative feedback maintains these hormones. sperm(plus inhibin)