Menstruation occurs after the functionalis layer of endometrium separates from the basalis. It is plausible to hypothesize that the separation between the two layers at a relatively superficial plane may lessen the likelihood of heavy bleeding or travel of stem cells into the pelvic cavity. Separation at a deeper plane, however, may favor the endometriosis phenotype.
Keywords: Color, Professional Education, Research, Anatomy, Cell biology / Histology, Reproductive Biology
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