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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?
Uterus, Parturition, Fertilisation, Gestation, Implantation.
How can the scientific understanding of the menstrual cycle of human females help as a contraceptive measure?
Sketch the labelled diagram.
Menstrual cycle
Explain the changes that occur in the ovary and uterus during menstrual cycle in human females. Mention the influence of pituitary and ovarian hormones in bringing these changes.
Define: Menarche
Complete the following sentences with appropriate word:
The human gestation period is about ____________.
Describe the phases of the menstrual cycle and their hormonal control.
Describe the structure of a Graafian follicle.
Follicle stimulating hormone : Development of oocyte : : Luteinizing hormone : ____________
The luteal phase of the menstrual cycle is also called the secretory phase. Give reason.
Painful menstruation is termed as ____________.
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.
In humans, the menstrual cycle is generally of ______.
In the absence of fertilization, corpus luteum ____________.
When does the following step take place?
When does ovulatory phase occur?
Corpus luteum develops from ______.
Corpus luteum ______.
Mature Graafian follicle is generally present in the ovary of a healthy human female around stet ______.
The endometrium in the female is the lining of ______.
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. |
Subject 2 has a higher level of hormone B, which is ______
Define ovulation.
When does the corpus luteum degenerate?
Menstrual flow occurs due to lack of ______.
After ovulation the collapsed ovarian follicle shrinks and becomes filled with cell to form:
The growth of corpus luteum is initiated by:
The menstrual cycle begins with ______
Which of the following statement is correct?
The graph given below shows the number of primordial follicles per ovary in women at different ages. Study the graph and answer the questions that follow.
- What is the average age of the women at the onset of menopause?
- At what age are maximum primordial follicles present in the ovary, according to the given graph?
Name the following:
The permanent stoppage of menstruation in human females around the age of 45 years.
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 egg is passed down through the oviduct by muscular contractions.
What is menarche?
