The male reproductive system is located in the pelvis region. It includes a pair of testes alongwith accessory duct, gland and the external genitalia.
The testes are situated outside the abdominal cavity within a pouch called scortum. The scrotom helps in maintaining the low temperature of the testes (2-2.5™c lower than the normal internal body temperature) necessary for spermatogenesis. IN adults each testis is oval in shape, with a length of about 4 to 5 cm and a width of about 2 to 3 cm. the testis is covered by a dence covering. Each testis has about 250 compartments called testicular lobules
Each lobule contains one to three highly coiled seminiferous tubules in which sperms are produced. Each seminiferous tubule is lined on this inside by two types of cells called male germ cells and sertoli cells.
The male germs cells undergo meiotic division finally leading to sperm formation, while sertoli cells provide nutrition to the germ cells. The regions outside the seminiferous tubules called interstitial spaces, contain small blood vessels and interstitial cells or leyding cells leydig cells synthesis and Secrete testicular hormones called androgens. Other immunologically competent cells are also present.