In this survey image of the uterus, the endometrial layer that lines the uterine cavity is seen on top of the thick layer of smooth muscle cells called myometrium.
The endometrium consists of a lighter-staining functional layer (stratum functionalis), and a darker-staining
basal layer (stratum basalis).
Though not shown in the image above, the uterine wall consists of three layers. The innermost, facing the uterine cavity, is the glandular endometrium. The middle layer is a thick smooth muscle myometrium
that is surrounded by the thin visceral epimetrium
(serosa), the outer layer.
Paraffin section, hematoxylin and eosin
Low-power light microscopy
Katsumi M. Miyai, M.D., Ph.D
Department of Pathology
School of Medicine
University of California, San Diego