Which of the following is the most accurate description of the relationship between the hypothalamus, pituitary gland, and gonads in regulating reproductive function?
Understand the Problem
The question is asking about the hormonal regulation of reproductive function, specifically the interplay between the hypothalamus, pituitary gland, and gonads (ovaries in females, testes in males). It requires understanding the roles of each gland and the feedback loops involved in maintaining hormonal balance.
Answer
The hypothalamus, pituitary gland, and gonads regulate reproductive function through a hormonal feedback loop involving GnRH, LH, FSH, and sex hormones.
The hypothalamus releases GnRH, stimulating the pituitary to release LH and FSH, which act on the gonads to produce sex hormones and regulate gametogenesis. The gonadal hormones then provide feedback to the hypothalamus and pituitary, completing the regulatory loop.
Answer for screen readers
The hypothalamus releases GnRH, stimulating the pituitary to release LH and FSH, which act on the gonads to produce sex hormones and regulate gametogenesis. The gonadal hormones then provide feedback to the hypothalamus and pituitary, completing the regulatory loop.
More Information
The HPG axis is crucial for sexual development, reproduction, and the expression of sexual behaviors.
Tips
A common mistake is thinking the pituitary gland controls the hypothalamus, but it is the other way around.
Sources
- The Hypothalamic-Pituitary-Gonadal Axis - Holland-Frei ... - NCBI - ncbi.nlm.nih.gov
- Hypothalamic-Pituitary-Gonadal Axis - ScienceDirect.com - sciencedirect.com
- Female Reproductive Endocrinology - Gynecology and Obstetrics - merckmanuals.com
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