Male reproductive physiology 552
Aetiology and evaluation of male infertility 554
Investigation of male infertility 556
Oligozoospermia and azoospermia 560
Varicocele 562
Treatment options for male infertility 564
The hypothalamus secretes luteinizing hormone-releasing hormone (LHRH), also known as gonadotrophin-releasing hormone (GnRH). This causes the pulsatile release of anterior pituitary gonadotrophins called follicle-stimulating hormone (FSH) and luteinizing hormone (LH), which act on the testis. FSH stimulates the seminiferous tubules to secrete inhibin and produce sperm; LH acts on Leydig cells to produce testosterone (...