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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 role of pituitary and the ovarian hormones in menstrual cycle in human females
Which hormones regulate menstrual cycle?
What is menstrual cycle? Describe it in brief.
Observe the figure and answer the questions given below.
a) What does the above figure indicate?
b) Which human organs are involved in this process?
c) Name the hormones responsible for this process.
d) After how many days these repetitive changes take place?
e) ‚A woman should stay away from others, as her body is impure during this process.‛ What is your opinion about this statement? Elaborate it.
Describe the phases of the menstrual cycle and their hormonal control.
Meanrch, menstrual cycle, and menopause are controlled by ______.
Describe the structure of a Graafian follicle.
Why menstrual cycle does not take place before puberty and during pregnancy?
Which one of the following menstrual irregularities is correctly matched?
Expand the acronym.
FSH
In humans, the menstrual cycle is generally of ______.
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 |
____________ is transformed to corpus luteum during luteal phase of the menstrual cycle.
Which set is similar?
The endometrium in the female is the lining of ______.
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. |
If the peak of Hormone A does not appear in the study for Subject 1, which of the following statement is true?
When does the corpus luteum degenerate?
A human female experiences two major changes, menarche and menopause during her life. Mention the significance of both the events.
Name the following:
The permanent stoppage of menstruation in human females around the age of 45 years.
Choose the odd one out from the following terms and name the category to which the others belong:
