Question

The regions outside the seminiferous tubules are called

• A. epididymis
• B. vas deferens
• C. interstitial spaces
• D. spermatogonia

Answer 1

Answer:

C. interstitial spaces

• Each Testicular lobule contains 1 to 3 highly coiled seminiferous tubules in which, sperms are produced. 
• Each seminiferous tubule is lined on its inside by two types of cells called

1. 1. Male germ cells (spermatogonia) and
   2. Sertoli cells.

• The male germ cells undergo meiotic divisions finally leading to sperm formation, while Sertoli cells (Nursing 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 cell.
• Leydig cells synthesise and secrete testicular hormones called androgens. Other immunologically competent cells are also present.