Hormonal control (animal hormones), class 10 and 11th

For video on animal hormones click on : https://youtu.be/9pLRiWNnL1c

Growth, maintenance and functioning of secondary sex organs (epididymis, penis, and vasa deference) are under the control of testosterone hormone secreted by leydig cell of testis. While seminiferous tubules and leydig cells are under control of FSH and ICSH. Sertoli cell secrete protein inhibin that suppress the action of FSH.

  • Puberty in male is controlled by testosterone that secreted from leydig cell of testis these cells are stimulated by ICSH.


  • Increase in height due to rapid growth of muscles.
  • Seminiferous tubules start to produce sperm.

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