Question

Sertoli cells are regulated by the pituitary hormone known as ____
A. LH
B. FSH
C. GH
D. Prolactin

Answer 1

Hint: The hormones are the chemical messengers which are released by the endocrine glands. They are released far from their target organs and carried through the blood as these glands do not have ducts. This hormone is released by the anterior pituitary due to the increased levels of gonadotropin hormones.

Complete Answer:
- The male reproductive system includes testes, scrotum, spermatic ducts, sex glands, and penis.
- Testis are the oval bodies, around 1.5 to 3 inches in length. The two primary functions of tests are producing testosterone which is a male sex hormone. And producing sperms which is the male gamete. It consists of various compartments known as testicular lobules. Each lobule contains highly coiled seminiferous tubules. They produce sperms and are lined by Sertoli cells.
- The process of spermatogenesis begins after puberty. It occurs mainly due to the release of gonadotropin releasing hormone (GnRH). The increase in this hypothalamic hormone increases the release of two gonadotropins namely LH and FSH.
- LH stands for luteinizing hormone whereas the FSH stands for follicle stimulating hormone. LH acts on the Leydig cells to cause the release of testosterone and FSH acts on the Sertoli cells to release factors necessary for spermatogenesis. Testosterone thus released helps in the process of formation of sperms.
- The normal range of the FSH in adult males is 1.5 – 12.4 mIU/mL and for LH is 1.7-8.6 mIU/mL.

The correct answer is option (B) FSH which stands for follicle stimulating hormone.

Note: Growth hormone is released by anterior pituitary and is responsible for the growth and metabolism of the body. It is of two types- somatotropin and somatropin. Increased levels of growth hormones can lead to gigantism and low levels of this hormone can cause dwarfism. Prolactin is also known as lactotropin. This hormone is mainly involved in lactation in females in mammals.