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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
Explain the events that occur in a graafian follicle at the time of ovulation and thereafter.
Give appropriate biological or technical terms for the following:
The onset of menstruation in a young girl
Explain the role of hormones during the menstrual cycle.
Name the Following
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Describe the phases of the menstrual cycle and their hormonal control.
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Which set is similar?
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Proliferative phase of menstrual cycle, is also called ______.
In case the ova does not fertilize, which of the following events will take place?
Exit from the cell cycle and remain dormant for long time by a cell is represented by one of the following phases of the cell cycle:
Define ovulation.
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Describe hormonal control in various phases of the menstrual cycle.
In the figure given below, parts A and B show the level of hormones which influence the menstrual cycle. Study the figure and answer the questions that follow:
- Name the organs which secrete the hormones represented in parts A and B.
- State the impact of the hormones in part B on the uterus of the human female during 6 to 15 days of the menstrual cycle.
