THORAX ABDOMEN AND PELVIS

Detailed explanation-1: -Once a female begins ovulating and menstruating, a corpus luteum will form in the ovary once the secondary oocyte is released from the follicle during monthly ovulation.

Detailed explanation-2: -The ovaries produce female reproductive hormones: progesterone, estrogen, relaxin and inhibin.

Detailed explanation-3: -The cells in the ovarian follicle that are left behind after ovulation undergo a transformation and become the corpus luteum. In addition to estrogen, they now produce high amounts of progesterone to prepare the lining of the uterus for implantation.

Detailed explanation-4: -Progesterone is an endogenous steroid hormone that is commonly produced by the adrenal cortex as well as the gonads, which consist of the ovaries and the testes. Progesterone is also secreted by the ovarian corpus luteum during the first ten weeks of pregnancy, followed by the placenta in the later phase of pregnancy.