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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
Name and explain the role of the inner and middle walls of the human uterus.
What is menstrual cycle?
the Biological/technical term for Complete stoppage of menstrual cycle in females
How can the scientific understanding of the menstrual cycle of human females help as a contraceptive measure?
Explain the role of hormones during the menstrual cycle.
Explain the menstruation phases in the menstrual cycle of a human female.
Name the Following
The onset of menstruation in a young girl at about the age of 13 years.
Multiple choice question.
Rupturing of follicles and discharge of ova is known as _______.
Describe the phases of the menstrual cycle and their hormonal control.
Meanrch, menstrual cycle, and menopause are controlled by ______.
Describe the structure of a Graafian follicle.
Explain the ovarian cycle with its different phases.
What is the menstrual cycle?
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.
Expand the acronym.
FSH
Explain the various phases of the menstrual cycle.
Detection of which hormone in urine is an indicator of pregnancy?
In humans, the menstrual cycle is generally of ______.
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 |
On the fourteenth day of the menstrual cycle the female gamete released is _____.
Ovulation in the human female normally takes place during the menstrual cycle ______.
Level of which hormones are at their highest during the luteal phase (second half of the cycle) of the menstrual cycle?
Corpus luteum ______.
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. |
If the peak of Hormone A does not appear in the study for Subject 1, which of the following statement is true?
Menstruation normally occurs once in ______.
Define ovulation.
Given below is a flow chart showing ovarian changes during menstrual cycle. Fill in the spaces giving the name of the hormones responsible for the events shown.
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?
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.
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?
Write a short note on Secretory Phase.
Given below is the diagram depicting the menstrual cycle in human beings. Study it carefully and answer the questions that follow.
- Which phases are indicated by ‘C’ and ‘D’?
- Name the structures labelled ‘F’. What is its role?
- Explain the changes in the level of progesterone during phases ‘C’ and ‘D’.
- Which hormone present in the urine confirms pregnancy in human beings?
- Identify the structure labelled ‘E’. Name the hormone released by it.
In the human menstrual cycle, the ovulation occurs around ______.
The first menstruation is called ______.
