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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
Identify True/False statement. Correct false statement to make it true.
Menstrual cycle ceases during pregnancy.
the biological/technical terms for Fixing of developing zygote on the uterine wall.
Give a significant point of difference between the oestrous and menstrual cycles.
Define the following term :
Ovulation
Observe the figure and answer the questions given below.
a) What does the above figure indicate?
b) Which human organs are involved in this process?
c) Name the hormones responsible for this process.
d) After how many days these repetitive changes take place?
e) ‚A woman should stay away from others, as her body is impure during this process.‛ What is your opinion about this statement? Elaborate it.
Draw a neat and well-labeled diagram showing T.S. of the ovary and describe the menstrual cycle in human females.
Give Reasons
Missing of menses is the first indication of pregnancy.
Name the Following
Sloughing of the uterine wall during menstrual flow.
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.
Multiple Choice Question:
The onset of menstruation in the female is termed
Meanrch, menstrual cycle, and menopause are controlled by ______.
How many pairs of testis are present in human male?
Write the answers to the following questions by observing the figure below.
- What does the figure above show?
- Which organs are involved in this process?
- Which hormones are involved in this process?
- After how many days do these changes happen again?
- Explain your opinion about the statement that a woman's body is impure while the above process is going on.
The luteal phase of the menstrual cycle is also called the secretory phase. Give reason.
Which one of the following menstrual irregularities is correctly matched?
Find the wrongly matched pair.
Answer the following type of question Assertion (A) and Reason (R).
(A) - Ovulation is the release of the ovum from the Graafian follicle.
(R) - It occurs during the follicular phase of the menstrual cycle.
Identify the phase of the menstrual cycle during which there is a peak in the level of progesterone.
Progesterone peaks during which phase of the menstrual cycle?
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 |
Choose the correct order of phases of the menstrual cycle.
Calculate the expected date of ovulation, if in a normal menstruating woman, gets her menses on 5th April.
Corpus luteum develops under the influence of ______.
Mainly which type of hormones control the menstrual cycle in human beings?
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?
Level of which hormones are at their highest during the luteal phase (second half of the cycle) of the menstrual cycle?
Which one of the following statements is incorrect about menstruation?
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?
Menstruation is triggered by an abrupt decline in the amount of ______.
Which of the following events is not associated with ovulation in human females?
The main function of mammalian corpus luteum is to produce ______.
About which day in a normal human menstrual cycle does rapid secretion of LH (Popularly called LH Surge) normally occurs?
Why are menstrual cycles absent during pregnancy?
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?
Which of the following statement is correct?
Name the following:
The permanent stoppage of menstruation in human females around the age of 45 years.
The egg is passed down through the oviduct by muscular contractions.
Longest phase of menstrual cycle is ______.
