Explain the internal structure of testis

Testes-

• Smooth organ situated outside the abdominal cavity within a pouch called
• The ******* helps in maintaining the low temperature of the testis which is 2-2.5^O C which is below than the normal internal body temperature.
• Each testisis 4 to 5 cm in length and 2 to 3 cm in width in adults.
• Each testis contains about250 compartments called testicular lobules.
• Each testicular lobules contain one to three highly coiled seminiferous tubules, in which sperms are produced.
• The wall of each seminiferous tubuleis lined by two types of cells called male germ cells (spermatogonia) and Sertoli cells.
• The male germ cells undergo meiosis leading to sperm formation and 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 Leydig cells.
• Leydig cells synthesize and secrete testicular hormones called androgens.