Question

What is the chief source of progesterone?

Answer 1

Atfirst, the source is the corpus luteum that has been "rescued" by the presence of human chorionic gonadotropin (hCG) from the conceptus.

Answer 2

Hormones are one of the most important bio chemical substances in any a living organism, which controls different internal and external biological processes.

Sex hormones are one of the most important hormones which controls different biological works in the basis of the sexual gender.

Progesterone is a female sex hormone is necessary during the menstrual cycle and the pregnancy.

Progesterone is formed by the female reproductive system components such as placenta, ovaries etc.