Q.
Given below is an incomplete flow chart showing influence of hormones of gametogenesis in human females. A, B, C and D in the chart refers to
A) A-$GnRH$, (Gonadotropin Releasing Hormone), B-Oestrogen and progesterone, C-Ovary, D-FSH and LH
B) A-$GnRH$, (Gonadotropin Releasing Hormone), B- Progesterone and LH, C-Ovary, D- Oestrogen and FSH
C) A-$GnRH$, (Gonadotropin Releasing Hormone), B-FSH and Oestrogen, C-Ovary, D-LH and Progesterone
D) A-$GnRH$, (Gonadotropin Releasing Hormone), B- FSH and LH, C-Ovary, D- Oestrogen and Progesterone
Explanation
The GnRH is secreted by hypothalamus which stimulates the anterior lobe of pituitary gland to secretes LH and FSH. FSH, stimulates the growth of the ovarian follicles and also increases the development of egg/oocytes within the follicle to complete the meiosis-I to form secondary oocyte. FSH also stimulates the formation of oestrogens. LH stimulates the corpus lutem to secretes progesterone. Rising level of progesterone inhibits the release of $GnRH$, which, in turn, inhibits the production of FSH, LH and progesterone [image:3_image67.png]
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.