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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
Describe the role of pituitary and ovarian hormones during the menstrual cycle in a human female.
Describe the changes that occur in ovaries and uterus in human female during the reproductive cycle.
Which hormones regulate menstrual cycle?
Explain the ovarian and uterine events that occur during a menstrual cycle in a human female under the influence of pituitary and ovarian hormones respectively.
Sketch the labelled diagram.
Menstrual cycle
Choose the correct answer from the four options given below :
On which day of the menstrual cycle does ovulation take place ?
Draw a neat and well-labeled diagram showing T.S. of the ovary and describe the menstrual cycle in human females.
Define: Menarche
Name the Following
The onset of menstruation in a young girl at about the age of 13 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.
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?
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.
Do you think that Rahini’s objection towards her parents was correct? If so, Why?
Which one of the following menstrual irregularities is correctly matched?
Explain the various phases of the menstrual cycle.
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.
During which phase of the menstrual cycle does the endometrium thicken up to 8-10 mm?
Lack of which hormone results in menstrual flow?
Match the Columns.
| Column I | Column II | ||
| i. | Proliferative phase | a. | Breakdown of the endometrial lining |
| ii. | Secretory phase | b. | Follicular phase |
| iii. | Menstruation | c. | Luteal phase |
The temporary endocrine gland in humans is ______.
All occur during follicular phase of menstrual cycle, EXCEPT
Corpus luteum ______.
Mature Graafian follicle is generally present in the ovary of a healthy human female around stet ______.
Which one of the following statements is incorrect about menstruation?
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. |
If the peak of Hormone A does not appear in the study for Subject 1, which of the following statement is true?
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 structure in the ovary will remain functional in subject 2?
Hormones responsible for menstrual cycle are produced from ______.
Menstruation normally occurs once in ______.
Define ovulation.
The main function of mammalian corpus luteum is to produce ______.
The secretory phase in the human menstrual cycle is also called:
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?
Which of the following statement is correct?
Choose the odd one out from the following terms and name the category to which the others belong:
Name these:
4 phases of the menstrual cycle.
Longest phase of menstrual cycle is ______.
On approximately which day of the menstrual cycle does ovulation occur?
What groups of animals exhibit the menstrual cycle?
