Question

Leydig cells are found adjacent to ............. in a testicle.

• A. Seminiferous tubules
• B. Epididymis
  
• C. Ovary
• D. None of the above

Answer 1

The correct option is A Seminiferous tubules

Each testis is oval-shaped measuring 4.5 cm long, 2.5 cm wide in the adult. It is enclosed in the fibrous sack, called as tunica albuginea. The sack extends into a test to divide the test into lobules. Next to tunica albuginea is tunica vaginals, which is a continuation of the membrane of the abdomino-pelvic cavity.

Each testis contains 800 lightly coiled seminiferous tubules, which produce thousands of sperm each second. The walls of the seminiferous tubules are lined with germinal tissue. The germinal tissue contains two types of cells: spermatogenetic cells producing or developing the sperm cell and the sustentacular cell which provide nourishment for the germinal sperm.

Between the seminiferous tubules clusters of endocrine cells called as interstitial endocrinocytes (Leydig cells) secrete male sex hormone (Androgens), where testosterone is the most important.