Findings

In this cross-sectional survey image of a portion of the ureter, the lumen is shown lined by a mucosa consisting of transitional epithelium and subjacent lamina propria that sits upon a muscularis composed of smooth muscle.

Comment

Ureters are muscular tubes lacking a true submucosa. They propel urine from the kidney to the bladder by peristalsis. In a relaxed state the epithelial lining is folded.

Preparation

Paraffin section, hematoxylin and eosin

View

Low-power light microscopy

Specimen

Ureters

Image Credit

V. Eroschenko, Ph.D.
Department of Biological Sciences
WAMI Medical Program
University of Idaho