
Uterus: pre-menstrual phase (Days 26-28)
The corpus luteum decreases hormone production, causing the endometrium to shrink, becoming less edematous. Alternate contraction and relaxation of spiral arteries results in ischemia and degeneration of endometrial tissue supplied by these vessels. This phase is also called the ischemic portion of the secretory phase. 10x

Functional zone
The corpus luteum decreases hormone production, causing the endometrium to shrink, becoming less edematous. Alternate contraction and relaxation of spiral arteries results in ischemia and degeneration of endometrial tissue supplied by these vessels. This phase is also called the ischemic portion of the secretory phase. 10x

Basal zone
The corpus luteum decreases hormone production, causing the endometrium to shrink, becoming less edematous. Alternate contraction and relaxation of spiral arteries results in ischemia and degeneration of endometrial tissue supplied by these vessels. This phase is also called the ischemic portion of the secretory phase. 10x

Myometrium
The corpus luteum decreases hormone production, causing the endometrium to shrink, becoming less edematous. Alternate contraction and relaxation of spiral arteries results in ischemia and degeneration of endometrial tissue supplied by these vessels. This phase is also called the ischemic portion of the secretory phase. 10x

Glands
The corpus luteum decreases hormone production, causing the endometrium to shrink, becoming less edematous. Alternate contraction and relaxation of spiral arteries results in ischemia and degeneration of endometrial tissue supplied by these vessels. This phase is also called the ischemic portion of the secretory phase. 10x

Degeneration
The corpus luteum decreases hormone production, causing the endometrium to shrink, becoming less edematous. Alternate contraction and relaxation of spiral arteries results in ischemia and degeneration of endometrial tissue supplied by these vessels. This phase is also called the ischemic portion of the secretory phase. 10x

Next image
The next image is similar to the area outlined by the rectangle.