Follicular or Proliferative Phase follows the Menstrual phase and lasts for about 10-12 days (from 5 th to 14 th days of the menstrual cycle). Ovulatory phase involves the ovulation from the Graafian follicle of ovary. It occurs midway between two menstrual cycles (on 15 th day of onset of menstruation). Luteal/Secretory/Post ovulatory phase lasts for about 12-14 days (from 16th −28th days of menstrual cycle). Corpus luteum is formed from empty Graafian follicle which increases in size. The follicular cells are converted to Lutein cells by deposition of yellowish lipid inclusions, giving it a yellow colour. This phase is the Luteal phase. Related Theory Both LH and FSH attain a peak level in the middle of cycle (about 14 14th day). Rapid secretion of LH leading to its maximum level during the mid-cycle called LH surge induce rupture of Graafian follicle and thereby release of ovum (ovulation).
Ovulation in the human female normally takes place during the menstrual cycle:
NEET UG 2004 — Zoology Human Reproduction
Ovulation in the human female normally takes place during the menstrual cycle:
Held on 30 Apr 2004 · Verified 9 Jul 2026.
Options
- A
at the mid secretory phase
- B
just before the end of the secretory phase
- C
at the beginning of the proliferative phase
- D
at the end of the proliferative phase.
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