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प्रश्न
Give Reasons
Missing of menses is the first indication of pregnancy.
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उत्तर
Because the endometrium of the uterus along with the unfertilized egg is given out in the form of menstrual flow.
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संबंधित प्रश्न
the biological/technical terms for Fixing of developing zygote on the uterine wall.
Observe the figure and answer the questions given below.

a) What does the above figure indicate?
b) Which human organs are involved in this process?
c) Name the hormones responsible for this process.
d) After how many days these repetitive changes take place?
e) ‚A woman should stay away from others, as her body is impure during this process.‛ What is your opinion about this statement? Elaborate it.
Define: Menarche
Which one of the following menstrual irregularities is correctly matched?
Menstruation is triggered by a sudden decline in the amount of hormone secreted by corpus luteum. Identify the hormone.
Which one of the following statements is incorrect about menstruation?
The endometrium in the female is the lining of ______.
The secretory phase in the human menstrual cycle is also called:
Given below is the diagram depicting the menstrual cycle in human beings. Study it carefully and answer the questions that follow.

- Which phases are indicated by ‘C’ and ‘D’?
- Name the structures labelled ‘F’. What is its role?
- Explain the changes in the level of progesterone during phases ‘C’ and ‘D’.
- Which hormone present in the urine confirms pregnancy in human beings?
- Identify the structure labelled ‘E’. Name the hormone released by it.
The enlarged mature follicle bursts to release the egg.
