Question

the differences between T.S. of testis and T.S. of ovary:​

Answer 1

Answer:

The T.S of the testis has a large number has seminiferous tubules, Germinal epithelium, spermatids, spermatogonial cells, primary spermatocytes, secondary spermatocytes and spermatozoa can be seen. The TS of the ovary is lined by a mass of tissue with germinal epithelium inside which an ovum is surrounded by one to several layers of follicular cells.    

Explanation:

TS of the testis:

• It shows the seminiferous tubules which are lined by cuboidal epithelial cells.
• The germ cells undergo spermatogenesis.
• The TS reveals the different stages of spermatogenesis like spermatogonia, primary and secondary spermatocyte, spermatids and sperm.
• Large pyramidal cells present in between the germinal cells are called Nurse cells or Sertoli cells.
• These provide nourishment to the sperm till maturation.
• A cluster of polygonal cells called interstitial cells or Leydig cells are present, they secrete male sex hormone called Androgen or Testosterone.  

TS of the ovary:

• A lining of germinal epithelium, inside which an ovum is present, which are surrounded by layers of follicular cells
• Number of layers increases as the ovum matures.
• Later a cavity called Antrum appears from the development of follicular cells.
• This cavity enlarges and the follicle grows bigger. This stage is called the Graffian follicle.
• At this stage, it is ready to release the Ovum.

• Corpus luteum, Corpus Albicans cells are noticed.
• Ovaries produce a hormone called oestrogen and progesterone.