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

Disclaimer: may from time to time provide links to third party Internet sites under their respective fair use policy and it may from time to time provide materials from such third parties on this website. These third party sites and any third party materials are provided for viewers convenience and for non-commercial educational purpose only. Compete does not operate or control in any respect any information, products or services available on these third party sites. makes no representations whatsoever concerning the content of these sites and the fact that has provided a link to such sites is NOT an endorsement, authorization, sponsorship, or affiliation by with respect to such sites, its services, the products displayed, its owners, or its providers.