(D) : During pregnancy,the placenta acts as an endocrine tissue and produces several hormones like human chorionic gonadotropin $(hCG)$,human placenta

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high level of circulating $hCG$ to stimulate estrogen and progesterone synthesis.

(D) : During pregnancy,the placenta acts as an endocrine tissue and produces several hormones like human chorionic gonadotropin $(hCG)$,human placental lactogen $(hPL)$,estrogens,and progestogens. The $hCG$ is secreted by the placenta to stimulate and maintain the corpus luteum in the ovary,which in turn secretes progesterone,essential for the maintenance of pregnancy.

Class 12 Biology Human Reproduction Pregnancy and Embryonic development

Medium

In a normal pregnant woman,the amount of total gonadotropin activity was assessed. The result expected was

AIPMT 2012 All AIPMT

A
high level of circulating $FSH$ and $LH$ in the uterus to stimulate implantation of the embryo
B
high level of circulating $hCG$ to stimulate endometrial thickening
C
high levels of $FSH$ and $LH$ in uterus to stimulate endometrial thickening
D
high level of circulating $hCG$ to stimulate estrogen and progesterone synthesis.