Question

3. Answer the following questions : (Any five)
(1) Observe the following diagram and answer the given que
(Marks 15)
ram and answer the given questions based on your observations
Hypothalamus
GnRH
FSH
LH
Changes in
the ovary during
menstruation
Fully grown follicle
Corpus
albicans
Ovulation
Corp
Corpus luteum
Progesterone and
estrogens
Estrogens
Beginning
of new
menstruation
Changes in
the uterus
during
menstruation
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 1 2
Period of Period of
Period of secretions of
Menstruation regeneration Ovulation glands in endometrium
of endometrium period
(i) In menstrual cycle which reproductive organs undergo changes?
(ii) Which period is said to be period of regeneration of endometrium?
(iii) Which period is said to be period of secretions of glands in endometrium?​

Answer 1

Menstruation takes place on the 14th day of the menstrual cycle. After menstruation the period when progesterone is secreted is known as stage of secretion.

Explanation:

• During menstruation the first week is marked what is the stage when there is increase in the follicle stimulating hormone and oestrogen to stimulate the growing ovum inside the uterus.
• After this there is menstruation due to decrease in the secretion of progesterone which is essential in the growing of the endometrium.
• Before this a search of the secretion of the luteinizing hormone and follicle stimulating hormone takes place. This is known as LH surge.
• After this the hormone progesterone is increased which helps in the growing of the endometrium to make the uterus suitable for fertilization.

To know more about the menstrual cycle,

What is menstrual cycle? What are the changes that occur in the the menstrual cycle

https://brainly.in/question/5220261