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Uterus: menstrual phase (Days 1-5)
When the ischemic tissue in the functional zone loses its integrity, it is sloughed as menstruation. This image, taken from early in the menstrual phase, shows an intact surface epithelium on the right half of the image, while tissue has already begun to slough in other areas (left half). 100x

Surface epithelium
When the ischemic tissue in the functional zone loses its integrity, it is sloughed as menstruation. This image, taken from early in the menstrual phase, shows an intact surface epithelium on the right half of the image, while tissue has already begun to slough in other areas (left half). 100x

Sloughed tissue
When the ischemic tissue in the functional zone loses its integrity, it is sloughed as menstruation. This image, taken from early in the menstrual phase, shows an intact surface epithelium on the right half of the image, while tissue has already begun to slough in other areas (left half). 100x

Glands
When the ischemic tissue in the functional zone loses its integrity, it is sloughed as menstruation. This image, taken from early in the menstrual phase, shows an intact surface epithelium on the right half of the image, while tissue has already begun to slough in other areas (left half). 100x