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प्रश्न
What role does pituitary gonadotropins play during follicular and ovulatory phases of menstrual cycle? Explain the shifts in steroidal secretions.
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उत्तर
Menstrual cycle is regulated by hypothalamus through the pituitary gland. At the end of menstrual phase, the pituitary FSH gradually increases resulting in follicular development within the ovaries. As the follicles mature, Estrogen secretion increases resulting in a surge in (FSHe and LH) The surge of LH15 responsible for ovulation. LH also gonadotropins induces luteinisation. This leading to the formation of corpus luteum. Corpus luteum secretes progesterone and source estrogen which help in maintaining the interine endometrium for implantation.
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संबंधित प्रश्न
Describe the role of pituitary and ovarian hormones during the menstrual cycle in a human female.
Why is follicular phase in the menstrual cycle also referred as proliferative phase? Explain.
What is the menstrual cycle?
Read the following passage and answer the question that follows:
Rahini and her parents were watching a television programme. 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.
What is first menstruation called? When does it occur?
The luteal phase of the menstrual cycle is also called the secretory phase. Give reason.
Painful menstruation is termed as ____________.
Find the wrongly matched pair.
Progesterone peaks during which phase of the menstrual cycle?
If the corpus luteum is present in the ovary even after 72 hours after ovulationit indicates that ______.
Choose the correct order of phases of the menstrual cycle.
All occur during follicular phase of menstrual cycle, EXCEPT
The endometrium in the female is the lining of ______.
Menstruation normally occurs once in ______.
The growth of corpus luteum is initiated by:
Why are menstrual cycles absent during pregnancy?
Given below is a flow chart showing ovarian changes during menstrual cycle. Fill in the spaces giving the name of the hormones responsible for the events shown.
The figure show a section of human ovary. Select the option which gives the correct identification of either A or B with function/characteristic.
Spermatogenesis is induced by ______.
In the human menstrual cycle, the ovulation occurs around ______.
The first menstruation is called ______.
