During menstrual cycle, the cyclic change take place in
A
Myometrium
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B
Corpus luteum
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C
Endometrium
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D
Perimetrium
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Solution
The correct option is C Endometrium The muscular layer of the human uterus is called the myometrium, the glandular layer is the endometrium and the outer layer (serosa) is the perimetrium. During the menstrual cycle, the endometrial tissue thickens due to the formation of blood vessels and cells due to an increase in progesterone. However, if implantation does not take place within two weeks approximately, the hormonal levels drop thus causing shedding of the endometrial tissue, a process of menstruation.
Thus, the entire menstrual cycle of nearly 28-30 days involves cyclic changes in the 'Endometrium'.