Describe the structure of a seminiferous tubule.

By Ritesh|Updated : September 4th, 2022

The sperm production in the testes happens in a coiled structure known as the seminiferous tubules. It is placed in the testicular lobules. Each of the seminiferous tubules is lined by the germinal epithelium on the inside by two different cells, Sertoli cells, and spermatogonia.

Structure of a Seminiferous Tubule

  • The male germ cells called Spermatogonia using meiotic divisions produce primary spermatocytes.
  • Primary spermatocytes further undergo meiotic division to form spermatids and secondary spermatocytes.
  • The spermatids are metamorphosed into male gametes, later known as spermatozoa.
  • Sertoli cells, called nurse cells of the testes, nourish the germ cells.
  • Large polygonal cells are interstitial or Leydig cells adjacent to seminiferous tubules. It secretes the male hormone known as testosterone.

Summary:

Describe the structure of a seminiferous tubule.

Seminiferous tubules are coiled tubes that are lined by spermatogonia on the inside and Sertoli cells which provide molecular signals and nutrition to the germ cells. It is the place of spermatogenesis where germ cells develop into spermatozoa in close interaction with Sertoli cells.

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