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प्रश्न
Explain the menstruation phases in the menstrual cycle of a human female.
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उत्तर
- During menstruation, the uterine lining, known as the endometrium, sheds along with blood vessels and tissue debris.
- If fertilization does not occur, this process is started by a reduction in estrogen and progesterone.
- Menstruation is the start of the menstrual cycle and usually lasts 3-7 day.
संबंधित प्रश्न
Describe the roles of pituitary and ovarian hormones during the menstrual cycle in a human female.
Differentiate between the following pair:
Menarche and menopause
Explain the ovarian cycle with its different phases.
All occur during follicular phase of menstrual cycle, EXCEPT
The correct sequence of hormone secretion from the beginning of menstruation is ______.
Corpus luteum ______.
Which one of the following events is correctly matched with the time period in a normal menstrual cycle?
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. |
For subject 2 it is observed that the peak for hormone B has reached the plateau stage. After approximately how much time will the curve for hormone B descend?
The onset of menstruation in a human female is called ______.
Name these:
4 phases of the menstrual cycle.
