Science, asked by harkirtpadda6372, 1 year ago

Menstrual cycle. Sketch the labeled diagrams

Answers

Answered by ritikagupta123
2
it is occurred only in girls in evey months due realiseing of egg by ovaries
Answered by gadakhsanket
5

Dear Student,

◆ Menstrual cycle -

  • Menstrual cycle is monthly cycle of changes in the ovaries and the endometrium which makes pregnancy possible.

There are 4 phases of menstrual cycle -

(1) Follicular phase -

  • duration - day 6 to day 13
  • follicles release estrogen causing thickening of endometrium.

(2) Ovulatory phase -

  • occurs at - day 14
  • follicle ruptures and develop into corpus luteum.

(3) Luteal phase -

  • duration - day 15 to day 28
  • endometrium is thickened due to release of estrogen & progesterone from corlus luteum.

(4) Menstrual phase -

  • duration - day 1 to day 5
  • corpus luteum degenerates and endometrium is sloughed off causing per vaginal bleeding & mucous discharge.

Hope this helped you. Keep asking..

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