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प्रश्न
Describe the structure of Graafian follicle.
उत्तर
Structure of Graafian follicle:
- The Graafian follicle is a mature ovarian follicle.
- The secondary oocyte is located eccentrically (away from the centre) and is surrounded by a non-cellular layer of zona pellucida secreted by the vitelline membrane of the oocyte,
- There are three layers covering the Graafian follicle. They are as follows:
- The outermost protective and fibrous covering is called theca externa.
- Inner to it is cellular theca interna which produces the hormone estrogen.
- Inner to the theca interna, the follicular cells from the membrane granulosa.
- From the membrane granulosa, the cells differentiate into discus proligerus and the corona radiata cells.
- Oocyte and the surrounding granulosa cells are together termed as Cumulus oophorus.
- A fluid-filled cavity called antrum lies between the oocyte and the membrane granulosa. It is filled with a fluid called liquor folliculi.
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संबंधित प्रश्न
Describe the changes that occur in ovaries and uterus in human female during the reproductive cycle.
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Complete the following sentences with appropriate word:
The human gestation period is about ____________.
Meanrch, menstrual cycle, and menopause are controlled by ______.
Menstruation begins 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?
What are the events taking place in the ovary and uterus during follicular phase of the menstrual cycle.
