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प्रश्न
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.
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उत्तर
- Phase C is the ovulation phase, while Phase D is the luteal phase.
- The Corpus Luteum is the structure identified with the label F. The Corpus Luteum produces progesterone, which promotes a healthy environment for the developing fetus.
- Progesterone levels are very low or negligible in phase C, while they are highest in phase D.
- The hormone present in the urine that confirms pregnancy in human beings is hCG [Human Chorionic Gonadotropin hormone].
- The structure labeled as 'E' is identified as a Graafian follicle, and the hormone released by it is estrogen.
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संबंधित प्रश्न
Explain the events that occur in a graafian follicle at the time of ovulation and thereafter.
Uterus, Parturition, Fertilisation, Gestation, Implantation.
Give a significant point of difference between the oestrous and menstrual cycles.
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.
Briefly describe the secretory phase of the menstrual cycle.
Explain the role of hormones during the menstrual cycle.
Give Reasons
Missing of menses is the first indication of pregnancy.
Which one of the following is the most likely root cause why menstruation is not taking place in regularly cycling human female?
The level of progesterone is high at which phase in the menstrual cycle?
The onset of menstruation in women is called ______.
