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Question: Answered & Verified by Expert
What is the main cause of menstrual flow in human females?
BiologyHuman ReproductionNEET
Options:
  • A Release of ovum
  • B Breakdown of endometrial lining
  • C Changes in hormones
  • D Fertilization of ovum
Solution:
2098 Upvotes Verified Answer
The correct answer is: Breakdown of endometrial lining
The menstrual flow in human females results from the breakdown of the endometrial lining of the uterus and its blood vessels, which forms liquid that comes out through the vagina.

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