The figure given below shows the sectional view of ovary. Select the option which gives correct identification of marked structure (A to D) and its feature.
(a) A: Primary follicle, it is also called gamete mother cell.
(b) B: Corpus luteum, it cannot be formed and added after birth.
(c) C: Grafian follicle, mature follicle which ruptures to release secondary oocyte.
(d) D: Tertiary follicle, a large number of this follicle degenerates during the phase from birth to puberty.
(c) C: Grafian follicle, mature follicle which ruptures to release secondary oocyte.
Explanation:
Oogonia are called as gamete mother cell. Corpus luteum is formed as a temporary endocrine structure after the ovulation. It is involved in the production of relatively high levels of progesterone and moderate levels of estradiol and inhibin A to maintain pregnancy. A large number of primary follicles degenerate during the phase from birth to puberty.