The ureters have walls with three principal layers. Use this virtual microscopic slide of URETER to identify the ureter and the following components:

• The inner mucosa, including a surface of transitional epithelium and underlying areolar connective tissue.
• Muscularis, containing smooth muscle, with inner layers arranged more longitudinally and outer layers more circularly.
• The outer adventitia, which is formed from areolar connective tissue.

• Click for a detailed image of transitional epithelium.

See this slide with the virtual microscope