Advertisement Remove all ads

Answer the Following Question. Explain the Following Phases in the Menstrual Cycle of a Human Female:: (I) Menstrual Phase (Ii) Follicular Phase (Iii) Luteal Phase - Biology

Answer in Brief

Answer the following question.
Explain the following phases in the menstrual cycle of a human female:
(i) Menstrual phase
(ii) Follicular phase
(iii) Luteal phase

Advertisement Remove all ads

Solution

(i) Menstrual phase :

  • The soft tissue of the endometrial lining of the uterus disintegrates causing bleeding.
  • The unfertilized egg and soft tissues are discharged.
  • It lasts for 3-5 days.

(ii) Follicular phase/Proliferative Phase:

  • The primary follicles in the ovary grow and become a fully mature Graafian follicle.
  • The endometrium regenerates.
  • It lasts for about 10 to 14 days.

(iii) Luteal phase (15 days to 28/29 days):

  • In this phase the ruptured follicle changes into corpus luteum in the ovary and it begins to secrete hormone progesterone.
  • The endometrium thickens further.
  • If the ovum is not fertilized, the corpus luteum undergoes degeneration and this causes disintegration of endometrium leading to menstruation.
  Is there an error in this question or solution?
Advertisement Remove all ads
Advertisement Remove all ads

Video TutorialsVIEW ALL [1]

Advertisement Remove all ads
Share
Notifications

View all notifications


      Forgot password?
View in app×