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प्रश्न
Mention the importance of LH surge during menstrual cycle.
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उत्तर
A rapid surge in LH induces the rupture of the Graafian follicle. This facilitates the release of an ovum. Thus, the rapid surge in LH facilitates ovulation.
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संबंधित प्रश्न
Describe the roles of pituitary and ovarian hormones during the menstrual cycle in a human female.
What is menstrual cycle?
Why is follicular phase in the menstrual cycle also referred as proliferative phase? Explain.
The Graafian follicle, after ovulation turns into a hormone producing issue called Corpus callosum.
Define Amenorrhea
Give appropriate biological or technical terms for the following:
The onset of menstruation in a young girl
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.
Explain the changes that occur in the ovary and uterus during menstrual cycle in human females. Mention the influence of pituitary and ovarian hormones in bringing these changes.
Give Reasons
Missing of menses is the first indication of pregnancy.
Name the Following
The term used when females stop menstruation at the age of 45-50 years.
Follicle stimulating hormone : Development of oocyte : : Luteinizing hormone : ____________
What is the menstrual cycle?
____________ is transformed to corpus luteum during luteal phase of the menstrual cycle.
Immediately after ovulation, the mammalian egg is covered by a membrane known as ______.
Corpus luteum develops from ______.
Distinguish between pollination and fertilisation. Mention the site and product of fertilisation in a flower.
Draw a neat, labelled diagram of a pistil showing pollen tube growth and its entry into the ovule.
A human female experiences two major changes, menarche and menopause during her life. Mention the significance of both the events.
Spermatogenesis is induced by ______.
Name these:
4 phases of the menstrual cycle.
Match Column I and Column II with respect to the menstrual cycle.
| Column I | Column II |
|---|---|
| i. Menstrual phase | c. Secretion of inhibin |
| ii. Follicular phase | b. Development of the primary follicle |
| iii. Ovulatory phase | a. Rapid secretion of LH |
| iv. Secretory phase | d. Secretion of estrogen |
Choose the correct option.
