Uterus: menstrual phase (Days 1-5)

Two images of the menstrual phase are shown. The image on the left (at higher magnification) was taken earlier during the menstrual phase, while the one on the right is from the end of menses. 100x, 10x

The functional zone is in the process of being sloughed in the left image. Note glands located at the luminal surface. The functional zone has been completely sloughed in the right-hand image, leaving only the basal zone behind.

The functional zone is in the process of being sloughed in the left image. Note glands located at the luminal surface. The functional zone has been completely sloughed in the right-hand image, leaving only the basal zone behind.

At left, sacculated glands abut the luminal surface, indicating that portions of endometrium have already been lost. Remaining glands are sacculated and contain secretory product. On the right all of functional zone has been lost and only bases of glands remain, from which new glands will originate. Extravasated blood can be seen throughout the endometrium.

At left, sacculated glands abut the luminal surface, indicating that portions of endometrium have already been lost. Remaining glands are sacculated and contain secretory product. On the right all of functional zone has been lost and only bases of glands remain, from which new glands will originate. Extravasated blood can be seen throughout the endometrium.

Two images of the menstrual phase are shown. The image on the left (at higher magnification) was taken earlier during the menstrual phase, while the one on the right is from the end of menses. 100x, 10x