Question
What direct effect does Follicle Stimulating Hormone (FSH) have in vertebrates?
The correct answer is
It causes follicles of the ovaries to grow.
FSH Effect on Vertebrate Ovaries
Follicle Stimulating Hormone (FSH) plays a vital role in the reproductive system of vertebrates. Its primary function is to regulate the development and maturation of reproductive cells.
FSH Action Explained
- Primary Role: In females, FSH directly stimulates the growth and development of ovarian follicles. These follicles contain the immature ova (eggs).
- Mechanism: As follicles grow under the influence of FSH, they also begin to produce estrogen.
Analysis of Options
- Option 1 (Duodenum): FSH does not have a direct effect on contracting follicles in the duodenum.
- Option 2 (Ovaries): This is the correct effect. FSH stimulates the growth of ovarian follicles.
- Option 3 (Liver): FSH's primary function is not related to the enlargement of liver follicles.
- Option 4 (Muscles): FSH does not directly cause contraction of follicles in muscles.
Therefore, the direct effect of FSH in vertebrates, particularly females, is the stimulation of ovarian follicle growth.
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