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Question

Progesterone is primarily secreted by which of the following structures?

A
Corpus luteum
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B
Ovum
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C
Spermatozoa
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D
Primary follicle
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Solution

The correct option is A Corpus luteum
The corpus luteum is the remnant structure of the secondary follicle after the egg is released during ovulation. It secretes progesterone following this process. The other structures do not release appreciable amounts of progesterone. The primary follicle differentiates into the secondary follicle, which in turn releases the ovum or the egg. The spermatozoa is involved with the fertilization of the egg, and does not release any progesterone.

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