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प्रश्न
Name the function of the following:
Corpus luteum
State the main function of the corpus luteum.
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उत्तर
It secretes progesterone, a hormone that prepares the uterus for implantation. If implantation fails, the corpus luteum goes inactive and degenerates. If an embryo is implanted, the corpus luteum continues to release progesterone until the fourth month of pregnancy, when the placenta takes over this function.
संबंधित प्रश्न
What is menstrual cycle?
Uterus, Parturition, Fertilisation, Gestation, Implantation.
Mention one significant difference between Hormones of ovulatory phase and hormones of luteal phase
Differentiate between the following pair:
Menarche and menopause
‘A proper understanding of the menstrual cycle can help immensely in family planning.’ Do you agree with the statement? Provide reasons for your answer.
Give Reasons
Missing of menses is the first indication of pregnancy.
Name the Following
The term used when females stop menstruation at the age of 45-50 years.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
Menarche is the stoppage of menstruation.
Follicle stimulating hormone : Development of oocyte : : Luteinizing hormone : ____________
State the names of four hormones which control 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?
Expand the acronym.
FSH
The following is the illustration of the sequence of ovarian events (a-i) in a human female.
Name the ovarian hormone and the pituitary hormone that have caused the above-mentioned events.
The life of corpus luteum is generally about ______ days in the absence of pregnancy
In humans, the menstrual cycle is generally of ______.
Calculate the expected date of ovulation, if in a normal menstruating woman, gets her menses on 5th April.
Ovulation in the human female normally takes place during the menstrual cycle ______.
Menstruation is triggered by a sudden decline in the amount of hormone secreted by corpus luteum. Identify the hormone.
Mature Graafian follicle is generally present in the ovary of a healthy human female around stet ______.
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. |
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. |
Subject 2 has a higher level of hormone B, which is ______
Distinguish between pollination and fertilisation. Mention the site and product of fertilisation in a flower.
Draw a neat, labelled diagram of a pistil showing pollen tube growth and its entry into the ovule.
Menstruation normally occurs once in ______.
The Corpus luteum grows during menstruation.
Menstruation is triggered by an abrupt decline in the amount of ______.
After ovulation the collapsed ovarian follicle shrinks and becomes filled with cell to form:
The growth of corpus luteum is initiated by:
Identify the correct statement from the following:
What role does pituitary gonadotropins play during follicular and ovulatory phases of menstrual cycle? Explain the shifts in steroidal secretions.
Observe the figure and label it properly.
- Name the hormone that regulates the cycle.
- Name the phases in this cycle.
- What is the duration of ovulation phase?
- What happens if implantation occurs?
- What happens if implantation does not occur?
The graph given below shows the number of primordial follicles per ovary in women at different ages. Study the graph and answer the questions that follow.
- What is the average age of the women at the onset of menopause?
- At what age are maximum primordial follicles present in the ovary, according to the given graph?
Complete the table:
| Number | Type | No. of pairs | Region |
| C1C8 | Cervical | ______ | Neck |
| T1T12 | ______ | 12 pairs | ______ |
| L1L5 | Lumbar | ______ | Lower back |
| S1S5 | ______ | 5 pairs | ______ |
| CO1 | Coccygeal | ______ | ______ |
Name the following:
Two layers of the wall of uterus.
The first menstruation is called ______.
What condition can cause a temporary stop in the menstrual cycle besides pregnancy?
