Inhibin is secreted by:
A. Stroma
B. Leydig cells
C. Corpus luteum
D. Surface epithelium
Explanation
Inhibin is secreted by:
In females
• Granulosa cells of the ovarian follicles
• Also by corpus luteum (in smaller amounts)
In males
• Sertoli cells of the testes
Function
Inhibin inhibits the secretion of FSH (Follicle-Stimulating Hormone) from the anterior pituitary gland to regulate gametogenesis.
Final Answer
👉 Inhibin is secreted by granulosa cells in females and Sertoli cells in males.
Other Options Details
Here is the description of all the given options:
A. Stroma
- The stroma refers to the connective tissue framework of an organ.
- In the ovary, the ovarian stroma contains blood vessels, nerves, and hormone-producing cells.
- It provides structural support and plays a role in hormone secretion and follicle development.
B. Leydig Cells
- Leydig cells are found in the testes, specifically in the spaces between the seminiferous tubules.
- They secrete testosterone, the male sex hormone.
- Their function is controlled by Luteinizing Hormone (LH).
- Testosterone is essential for sperm production, development of male secondary sexual characteristics, and overall reproductive function.
C. Corpus Luteum
- The corpus luteum forms from the ruptured Graafian follicle after ovulation in the ovary.
- It secretes progesterone and some estrogen.
- Progesterone maintains the uterine lining for possible pregnancy and supports early pregnancy.
- If fertilization does not occur, it degenerates into the corpus albicans.
D. Surface Epithelium
- This is the outermost layer covering the ovary.
- It consists of a single layer of cuboidal or low columnar epithelial cells.
- It protects the ovary and plays a role in ovulation and repair after follicle rupture.
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Writer: Vandita Singh, Lucknow (GS India Nursing Group)