Inhibin

Definition

Inhibin is a hormone that is produced by the gonads (testes in men and ovaries in women). Its primary function is to inhibit the release of follicle-stimulating hormone (FSH) from the anterior pituitary gland.

5 Must Know Facts For Your Next Test

1. Inhibin plays a key role in the regulation of the reproductive system by controlling FSH levels.
2. There are two types of inhibins: Inhibin A and Inhibin B, each with different roles during various phases of the menstrual cycle.
3. In men, inhibin B is primarily produced by Sertoli cells in the testes and regulates sperm production.
4. In women, inhibin A is produced by granulosa cells in the ovaries and its levels fluctuate throughout the menstrual cycle, peaking during the luteal phase.
5. Inhibin serves as a feedback mechanism to maintain hormonal balance within the reproductive system.

Review Questions

• What are the main types of inhibins and where are they produced?
• How does inhibin regulate follicle-stimulating hormone (FSH) levels?
• What role does inhibin play in male reproductive physiology?

Related terms

Follicle-Stimulating Hormone (FSH): A hormone involved in regulating reproductive processes including gamete production and development.

Gonads: The organs that produce gametes; testes in males and ovaries in females.

Luteal Phase: The phase of the menstrual cycle following ovulation when progesterone levels peak.