Question

Explain the structure of testes in detail with a neat and labelled diagram.

Answer 1

1. Testes are the reproductive glands of the male that are oval shaped organs which lie outside the abdominal cavity of a man in a sac like structure called scrotum.
2. Now we shall study the various cells which are present in the testes. Each testes is covered with a layer of fibrous tissue called tunica albuginea.
3. Many septa from this layer divide the testes into pyramidal lobules, in which lie seminiferous tubules, cells of Sertoli, and the Leydig cells (interstitial cells).
4. The process of spermatogenesis takes place in the seminiferous tubules. The Sertoli cells are the supporting cells and provide nutrients to the developing sperms. The Leydig cells are polyhedral in shape and lie between the seminiferous tubules and secrete testosterone. It initiates the process of spermatogenesis.

L.S of human testes