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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
Give Reasons
Missing of menses is the first indication of pregnancy.
Multiple Choice Question:
The onset of menstruation in the female is termed
Find the wrongly matched pair.
Calculate the number of spermatozoa produced by a single primary spermatocyte.
On the fourteenth day of the menstrual cycle the female gamete released is _____.
Ovulation in the human female normally takes place during the menstrual cycle ______.
To answer the question, study the graphs below for Subjects 1 and 2 showing different levels of certain hormones.
The peak observed in Subject 1 and 2 is due to ______
A biology student after studying the different levels of hormones during the menstrual cycle was comparing 2 subjects (Patients). A table was created after looking at the levels of hormones A and B for Subjects 1 and 2. Read the information in the table and answer the question that follows.
| HORMONE A | HORMONE B | |
| Subject 1 | Shows a peak on the 14th Day of the menstrual cycle. | Falls down during the luteal phase. |
| Subject 2 | Shows a peak on the 14th Day of the menstrual cycle. | The level is maintained high in the luteal phase. |
Which of the following statements is true about the subjects?
The level of progesterone is high at which phase in the menstrual cycle?
A human female experiences two major changes, menarche and menopause during her life. Mention the significance of both the events.
