$A$: Corpus luteum begins to atrophy after a short life of $10$ to $14$ days,if fertilization does not occur.
$R$: Luteolysis may be due to the withdrawal of $LH$ support.

  • A
    Assertion and Reason both are correct and Reason is the correct explanation of Assertion.
  • B
    Assertion and Reason both are correct but Reason is not the correct explanation of Assertion.
  • C
    Assertion is correct,but Reason is incorrect.
  • D
    Both Assertion and Reason are incorrect.

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At which phase is the secretion of gonadotropins ($LH$ and $FSH$) highest during the menstrual cycle?

If in a normal menstruating woman,menses occur on $5^{\text{th}}$ April,what will be the expected date of ovulation?

Withdrawal of which of the following hormones is the immediate cause of menstruation?

What is the typical duration of the menstrual cycle in human females (in $days$)?

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