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Microscopic Photos of Reproductive System Tissue Slides 4 years ago Histology of the uterus
The uterine wall is composed of three layers:
Endometrium – specialized mucosa that undergoes marked changes during the menstrual cycle.
Functional Layer (or stratum functionalis) – upper two thirds that regenerates from cells in the basal layer under the influence of estrogen.
Simple Columnar Epithelium – epithelial cells remaining from the bases of glands rapidly proliferate and migrate to restore the surface epithelium.
Endometrial Stroma – cells proliferate and secrete collagen and ground substance to restore the lamina propria.
Uterine Glands – surface epithelium invaginates into the stroma to form new glands.
The glands are straight (or slightly wavy) and have narrow lumens.
Very little secretion.
Basal Layer (or stratum basalis) – lower third of the mucosa that is retained during menstruation and regenerates the functional layer.