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प्रश्न
What is menstrual cycle?
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उत्तर
The menstrual cycle is the cyclic change of the reproductive tract of a primate female. This period is marked by a characteristic event repeated almost every month (28 days with minor variation) in the form of a menstrual flow (i.e., shedding of the endometrium of the uterus with bleeding). Only during pregnancy does it temporarily cease.
APPEARS IN
संबंधित प्रश्न
Explain the role of pituitary and the ovarian hormones in menstrual cycle in human females
Name the function of the following:
Corpus luteum
Differentiate between the following pair:
Menarche and menopause
Briefly describe the secretory phase of the menstrual cycle.
Give Reasons
The chances of pregnancy to occur are most favourable on or about the 14th day of the menstrual cycle. Explain.
How many pairs of testis are present in human male?
What is the menstrual cycle?
Read the following passage and answer the question that follows:
Rahini and her parents were watching a television program. An advertisement flashed on the screen which was promoting the use of sanitary napkins. Rahini’s parents suddenly changed the channel, but she objected to her parents and explained the need and importance of such an advertisement.
List out the napkin hygiene measures taken during menstruation?
The luteal phase of the menstrual cycle is also called the secretory phase. Give reason.
Expand the acronym.
FSH
During which phase of the menstrual cycle does the endometrium thicken up to 8-10 mm?
Lack of which hormone results in menstrual flow?
The life of corpus luteum is generally about ______ days in the absence of pregnancy
Choose the correct order of phases of the menstrual cycle.
When does the following step take place?
Calculate the expected date of ovulation, if in a normal menstruating woman, gets her menses on 5th April.
Immediately after ovulation, the mammalian egg is covered by a membrane known as ______.
Mainly which type of hormones control the menstrual cycle in human beings?
Menstruation is triggered by a sudden decline in the amount of hormone secreted by corpus luteum. Identify the hormone.
Exit from the cell cycle and remain dormant for long time by a cell is represented by one of the following phases of the cell cycle:
The Corpus luteum grows during menstruation.
Define ovulation.
Which of the following events is not associated with ovulation in human females?
About which day in a normal human menstrual cycle does rapid secretion of LH (Popularly called LH Surge) normally occurs?
After ovulation the collapsed ovarian follicle shrinks and becomes filled with cell to form:
The menstrual cycle begins with ______
Answer the following questions by observing the diagram of menstrual cycle:
- What is the period of menstruation?
- On which day does ovulation occur during the menstrual cycle?
- In the menstrual cycle which reproductive organs undergo changes?
- Which period is said to be the period of regeneration of endometrium?
- Which period is said to be the period of secretions of glands in endometrium?
The egg is passed down through the oviduct by muscular contractions.
Complete the following table by writing the name of the structure or the function of the given structure:
| Structure | Function | ||
| 1. | Corpus luteum | 1. | ______ |
| 2. | ______ | 2. | Produces male gametes in mass |
| 3. | Leydig cells | 3. | ______ |
| 4. | ______ | 4. | Stores the sperms until they mature and become mobile |
| 5. | Umbilical cord | 5. | ______ |
| 6. | Fallopian tube | 6. | ______ |
