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प्रश्न
Describe the structure of a Graafian follicle.
Explain the structure of a Graafian follicle.
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उत्तर
- The Graafian follicle is a mature ovarian follicle.
- The secondary oocyte is positioned off to the side and is surrounded by a layer called zona pellucida, which is not made of cells and is produced by the oocyte’s vitelline membrane.
- There are three layers covering the Graafian follicle. They are as follows:
- Theca externa is the name for the outermost protective and fibrous covering.
- Inner to it is cellular theca interna which produces the hormone estrogen.
- Inner to the theca interna are the follicular cells from the membrane granulosa.
- From the membrane granulosa, the cells differentiate into discus proligerus and the corona radiata cells.
- Cumulus oophorus is the term used for the oocyte and surrounding granulosa cells.
- A fluid-filled cavity called the antrum lies between the oocyte and the membrane granulosa.
- It is filled with a fluid called liquor folliculi.
संबंधित प्रश्न
Describe the changes that occur in ovaries and uterus in human female during the reproductive cycle.
Define Amenorrhea
‘A proper understanding of the menstrual cycle can help immensely in family planning.’ Do you agree with the statement? Provide reasons for your answer.
Identify the phase of the menstrual cycle during which there is a peak in the level of progesterone.
Which hormone is secreted by the developing secondary follicles?
All occur during follicular phase of menstrual cycle, EXCEPT
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?
Identify the correct statement from the following:
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?
Which of the following statement is correct?
