Normal·Renal/Urinary·Bladder
Transitional epithelium (urothelium) — urinary bladder
Stain: H&E·Magnification: 40x·Tissue: Transitional epithelium·3 labeled regions
Wikimedia Commons · File:Harnblase Urothel.png · https://commons.wikimedia.org/wiki/File:Harnblase_Urothel.png (CC-licensed)
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Stretchable multi-layer epithelium unique to the urinary tract. Apical 'umbrella cells' have specialized plaques that resist urine.
Labeled regions (3)
- 1Umbrella cell
Large dome-shaped luminal cell with specialized uroplakin plaques.
- 2Intermediate cells
Pear-shaped middle layers; allow stretching.
- 3Basal cells
Cuboidal anchoring layer on basement membrane.
