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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?
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.
Give Technical Term:
The phase in the menstrual cycle in which the remnant of a follicle in the ovary turns to corpus luteum.
Multiple choice question.
Rupturing of follicles and discharge of ova is known as _______.
Describe the phases of the menstrual cycle and their hormonal control.
Explain the ovarian cycle with its different phases.
State the names of four hormones which control menstrual cycle.
Why menstrual cycle does not take place before puberty and during pregnancy?
What are the phases of the menstrual cycle? Indicate the changes in the ovary and uterus.
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.
Detection of which hormone in urine is an indicator of pregnancy?
Identify the phase of the menstrual cycle during which there is a peak in the level of progesterone.
Which one of the following events occurs during the secretory phase of the menstrual cycle?
In humans, the menstrual cycle is generally of ______.
Menstruation begins due to ______.
How long does the secretory phase of the menstrual cycle last?
When does ovulatory phase occur?
On the fourteenth day of the menstrual cycle the female gamete released is _____.
The correct sequence of hormone secretion from the beginning of menstruation is ______.
The mammalian corpus luteum produces ______.
Which set is similar?
Which one of the following is the most likely root cause why menstruation is not taking place in regularly cycling human female?
Menstruation is triggered by a sudden decline in the amount of hormone secreted by corpus luteum. Identify the hormone.
Corpus luteum ______.
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. |
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. |
Which structure in the ovary will remain functional in subject 2?
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?
When does the corpus luteum degenerate?
After ovulation the collapsed ovarian follicle shrinks and becomes filled with cell to form:
What role does pituitary gonadotropins play during follicular and ovulatory phases of menstrual cycle? Explain the shifts in steroidal secretions.
In the figure given below, parts A and B show the level of hormones which influence the menstrual cycle. Study the figure and answer the questions that follow:
- Name the organs which secrete the hormones represented in parts A and B.
- State the impact of the hormones in part B on the uterus of the human female during 6 to 15 days of the menstrual cycle.
Choose the odd one out from the following terms and name the category to which the others belong:
The onset of menstruation in a human female is called ______.
The enlarged mature follicle bursts to release the egg.
Match Column I and Column II with respect to the menstrual cycle.
| Column I | Column II |
|---|---|
| i. Menstrual phase | c. Secretion of inhibin |
| ii. Follicular phase | b. Development of the primary follicle |
| iii. Ovulatory phase | a. Rapid secretion of LH |
| iv. Secretory phase | d. Secretion of estrogen |
Choose the correct option.
