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प्रश्न
Describe the role of pituitary and ovarian hormones during the menstrual cycle in a human female.
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उत्तर
Follicle-stimulating hormone (FSH) and luteinising hormone are pituitary hormones. Oestrogen and progesterone are ovarian hormones.
Functions of pituitary and ovarian hormones:
| Hormone | Functions |
| FSH | i. Stimulates the ovarian follicles to secrete oestrogen. ii. Stimulates the proliferation of the endometrium of the uterine wall. iii. Stimulates the maturation of Graafian follicles. |
| LH | i. Stimulates the release of ovum. ii. Develops corpus luteum and secretion of progesterone. iii. Maintains pregnancy |
| Oestrogen | i. Controls the changes in the secondary sex organs in the first half of the menstrual cycle. ii. Stimulates growth, maturation and functions of secondary sex organs. iii. Repairs the damaged tissues of the uterus and fallopian tubes after menstruation. iv. Stimulates the maturation of ova development of uterine lining and mammary glands. |
| Progesterone | i. Facilitates the preparation of the endometrium for implantation. ii. Inhibits the contraction of the uterus and the development of new follicles. |
संबंधित प्रश्न
Explain the events that occur in a graafian follicle at the time of ovulation and thereafter.
Explain the ovarian and uterine events that occur during a menstrual cycle in a human female under the influence of pituitary and ovarian hormones respectively.
What is menstrual cycle? Describe it in brief.
How many pairs of testis are present in human male?
Read the following passage and answer the question that follows:
Rahini and her parents were watching a television program. An advertisement flashed on the screen which was promoting the use of sanitary napkins. Rahini’s parents suddenly changed the channel, but she objected to her parents and explained the need and importance of such an advertisement.
List out the napkin hygiene measures taken during menstruation?
What are the phases of the menstrual cycle? Indicate the changes in the ovary and uterus.
____________ is transformed to corpus luteum during luteal phase of the menstrual cycle.
Mainly which type of hormones control the menstrual cycle in human beings?
Identify the correct statement from the following:
Name these:
4 phases of the menstrual cycle.
