Human Reproduction
Menstrual cycle
- Menstrual cycle is the cyclic change in the reproductive tract of primate female that continues from about the age of about 13 to 15 years (menarche to 45-50 years)
- Menopouse is a phase in womans life when ovulation and menstruation stop.
| Phases | Days | Events |
| Menstrual phase | 3-5 | Breakdown of Endometrium, Beginning of menstruation, reduction of progesterone |
| Follicular phase [Proliferative phase] | 6-13 | Endometrium rebuilds, increase in FSH and LH which stimulates follicular development as well as secretion of oestrogen. |
| Ovulatory phase | 1+ | Both LH and FSH attain a peak level. Ovulation occurs. |
| Luteal phase (Secretory phase) | 15-28 | Corpus Lutrum secretes progesterone Endometrium thickness and uterine glands become secretory. |
Watch this video for the topic from 0:31 to 31:17
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