Human Reproduction
- Menstrual flow occurs due to lack of:
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During menstrual or bleeding phase which comprises of 3 - 5 days out of 28 days menstrual cycle, the production of LH from the anterior lobe of the pituitary gland is considerably reduced. The withdrawal of this hormone causes degeneration of corpus luteum and therefore, progesterone production is reduced. Production of estrogens is also reduced in this phase.Correct Option: D
During menstrual or bleeding phase which comprises of 3 - 5 days out of 28 days menstrual cycle, the production of LH from the anterior lobe of the pituitary gland is considerably reduced. The withdrawal of this hormone causes degeneration of corpus luteum and therefore, progesterone production is reduced. Production of estrogens is also reduced in this phase.
- Select the correct option describing gonadotropin activity in a normal pregnant female:
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Synthesis of estrogen and progesterone due to high level of hCG is a normal gonadotropic activity in a normal pregnant female.
Correct Option: C
Synthesis of estrogen and progesterone due to high level of hCG is a normal gonadotropic activity in a normal pregnant female.
- In human females, meiosis-II is not complete until?
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Meiosis-II does not complete untill fertilization occurs in females (in human being).
Correct Option: A
Meiosis-II does not complete untill fertilization occurs in females (in human being).
- Which of the following events is not associated with ovulation in human female?
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In human female, during ovulation, LH surge takes place due to hypersecretion of estrogen, which induces positive feed back to anterior pituitary for secretion of LH.
Correct Option: D
In human female, during ovulation, LH surge takes place due to hypersecretion of estrogen, which induces positive feed back to anterior pituitary for secretion of LH.
- Which of the following cells during gametogenesis is normally dipoid?
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During gametogenesis, spermatogonia are diploid because of undergoing the process of meiosis.
Correct Option: B
During gametogenesis, spermatogonia are diploid because of undergoing the process of meiosis.