Endometrial dating pathology

02-Aug-2017 21:28

When the uterine muscles contract, they constrict the blood supply (vasoconstriction) to the endometrium.This contraction blocks the delivery of oxygen to the tissue of the endometrium which, in turn, breaks down and dies.Each month, the inner lining of the uterus (the endometrium) normally builds up in preparation for a possible pregnancy.After ovulation, if the egg is not fertilized by a sperm, no pregnancy will result and the current lining of the uterus is no longer needed.The woman's estrogen and progesterone hormone levels decline, and the lining of the uterus becomes swollen and is eventually shed as the menstrual flow.It is replaced by a new growth of lining during the next monthly cycle.In secondary dysmenorrhea, some underlying abnormal condition (usually involving a woman's reproductive system) contributes to the menstrual pain.Secondary dysmenorrhea may be evident at menarche, but more often, the condition develops later.

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Menstrual cramps typically are not experienced until ovulatory menstrual cycles (when an egg is released from the ovaries) begin.Many women suffer from both PMS and menstrual cramps.