Question

When it is ovulated, the female gamete is at a stage called the

A-ovum.

B-primary oocyte.

C-secondary oocyte.

D-germ cell.

Answer 1

The estrogens stimulate the pituitary cells to be sensitive to GnRH released by hypothalamus. Near 14^th day of follicular development the anterior pituitary cells respond to GnRH and the LH. This results in the surge of LH concentration that lasts for about 36 hours. The primary oocyte completes meiosis one in response to LH and LH surge leads to rupture of follicular wall. As a result the secondary oocyte comes out along with the follicular fluid out of the ovary. This process is called ovulation. Therefore, during the process of ovulation secondary oocyte is reeased and is called ovum or egg. Option C is correct.