Question

22. Name the phase in the menstrual cycle when estrogen is secreted and it reaches the peak level.
Mention its source and action on the uterus.
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Answer 1

Answer:

Estrogen levels peak toward the end of the follicular phase of the menstrual cycle, which exerts a positive feedback on luteinizing hormone (LH).

Explanation:

In short, androgens are precursors of estrogens; they are converted to estrogens through the action of an enzyme known as aromatase. The ovaries are the richest source of aromatase, although some aromatase is present in adipose tissue, which is also an important source of estrogen in postmenopausal women.