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Questions
Name the function of the following:
Corpus luteum
State the main function of the corpus luteum.
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Solution
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.
RELATED QUESTIONS
Describe the roles of pituitary and ovarian hormones during the menstrual cycle in a human female.
What is menstrual cycle?
Which hormones regulate menstrual cycle?
Define the following term :
Ovulation
What is menstrual cycle? Describe it in brief.
Name the Following
Sloughing of the uterine wall during menstrual flow.
Why menstrual cycle does not take place before puberty and during pregnancy?
Detection of which hormone in urine is an indicator of pregnancy?
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 |
How long does the secretory phase of the menstrual cycle last?
Choose the correct order of phases of the menstrual cycle.
All occur during follicular phase of menstrual cycle, EXCEPT
Luteal phase is also known as ____________.
Identify the INCORRECT statement.
Immediately after ovulation, the mammalian egg is covered by a membrane known as ______.
The mammalian corpus luteum produces ______.
Which set is similar?
Withdrawal of which of the following hormones is the immediate cause of menstruation?
Which one of the following is the correct matching of the events occurring during menstrual cycle?
Menstruation is triggered by a sudden decline in the amount of hormone secreted by corpus luteum. Identify the hormone.
Level of which hormones are at their highest during the luteal phase (second half of the cycle) of the menstrual cycle?
Corpus luteum develops from ______.
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. |
Which of the following statements is true about the subjects?
The Corpus luteum grows during menstruation.
Define ovulation.
The growth of corpus luteum is initiated by:
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.
The figure show a section of human ovary. Select the option which gives the correct identification of either A or B with function/characteristic.
Write a short note on Proliferative Phase.
The onset of menstruation in a human female is called ______.
In the human menstrual cycle, the ovulation occurs around ______.
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. | ______ |
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.
Longest phase of menstrual cycle is ______.
What is menarche?
