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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
Draw a graafian follicle and label antrum and secondary oocyte.
Explain the ovarian cycle with its different phases.
Why menstrual cycle does not take place before puberty and during pregnancy?
The luteal phase of the menstrual cycle is also called the secretory phase. Give reason.
Corpus luteum produces ______.
Proliferative phase of menstrual cycle, is also called ______.
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. |
Subject 2 has a higher level of hormone B, which is ______
In case the ova does not fertilize, which of the following events will take place?
The main function of mammalian corpus luteum is to produce ______.
Name the following:
The permanent stoppage of menstruation in human females around the age of 45 years.
