Advertisements
Advertisements
प्रश्न
Describe the role of pituitary and ovarian hormones during the menstrual cycle in a human female.
Advertisements
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
What is menstrual cycle?
Define the following term :
Ovulation
Which one of the following events occurs during the secretory phase of the menstrual cycle?
Progesterone peaks during which phase of the menstrual cycle?
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 |
Immediately after ovulation, the mammalian egg is covered by a membrane known as ______.
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 ______
The secretory phase in the human menstrual cycle is also called:
At which stage of the menstrual cycle, both LH and FSH are high?
What are the events taking place in the ovary and uterus during follicular phase of the menstrual cycle.
