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प्रश्न
Which hormones regulate menstrual cycle?
उत्तर
The follicle-stimulating hormone (FSH), luteinizing hormone (LH), estrogen, and progesterone are the various hormones that regulate the menstrual cycle. The level of FSH and LH secreted from the anterior pituitary gland increases during the follicular phase. FSH secreted under the influence of RH (releasing hormone) from the hypothalamus stimulates the conversion of a primary follicle into a Graafian follicle. The level of LH increases gradually, leading to the growth of the follicle and secretion of estrogen. Estrogen inhibits the secretion of FSH and stimulates the secretion of luteinizing hormone. It also causes the thickening of the uterine endometrium. The increased level of LH causes the rupturing of the Graafian follicle and releases the ovum into the fallopian tube. The ruptured Graafian follicle changes to the corpus luteum and starts secreting progesterone hormone during the luteal phase. Progesterone hormone helps in the maintenance and preparation of the endometrium for the implantation of the embryo. High levels of progesterone hormone in the blood decrease the secretion of LH and FSH, therefore inhibiting further ovulation.
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संबंधित प्रश्न
Name the function of the following:
Corpus luteum
Identify True/False statement. Correct false statement to make it true.
Menstrual cycle ceases during pregnancy.
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'A proper understanding of the menstrual cycle can help immensely in family planning.' Do you agree with the statement? Provide reasons for your answer.
Describe the phases of the menstrual cycle and their hormonal control.
What is the menstrual cycle?
Why menstrual cycle does not take place before puberty and during pregnancy?
What are the phases of the menstrual cycle? Indicate the changes in the ovary and uterus.
Explain the various phases of the menstrual cycle.
Lack of which hormone results in menstrual flow?
Menstruation begins due to ______.
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 |
Calculate the number of spermatozoa produced by a single primary spermatocyte.
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Mainly which type of hormones control the menstrual cycle in human beings?
Which one of the following events is correctly matched with the time period in a normal menstrual cycle?
Proliferative phase of menstrual cycle, is also called ______.
To answer the question, study the graphs below for Subjects 1 and 2 showing different levels of certain hormones.
The peak observed in Subject 1 and 2 is due to ______
Which of the following events is not associated with ovulation in human females?
Which of the following statement is correct?
