MEDIVEERSETHE PRACTICAL HUB
Locate umbrella cells on this anatomical reference. Read the original plate labels to confirm the view and adjacent structures.
Zoom in, then drag to inspect. Keyboard: + / − to zoom, arrows to pan, 0 to reset. Tap the numbered markers to explore parts.
transitional: labelled anatomical figure. Original source colours and labels retained.
Image: OpenStax / University of Hawaiʻi adapted teaching figures; original contributors credited at source · Source / original · CC BY 4.0 — figure credits at sourceNumbered markers and focused views are Mediveerse learning overlays; the original reference is linked above.
Transitional epithelium (urothelium)
Understand what you see.
Forms a distensible urine-resistant barrier in much of the urinary tract.
Zoom into the original labels. Practise pointing out each structure, then explain it aloud. Diagrams are teaching references; specimen appearance and slide staining vary.
How to recognise it.
- Stratified lining with dome-shaped surface cells
- Surface changes with distension
- Luminal umbrella cells may be binucleate
Point them out.
Tap a number to open its reference, zoom in and locate the structure. Numbers stay the same across views. This key follows landmarks visible in the reference images.
Think first. Then reveal.
Say your answer aloud before opening the suggested response.
01How do you identify transitional epithelium (urothelium)?+
Stratified lining with dome-shaped surface cells. Surface changes with distension. Luminal umbrella cells may be binucleate.
02Where is urothelium found?+
Renal pelvis, ureters, urinary bladder and proximal urethral regions.
03Why does its appearance change with distension?+
Cells flatten and the lining becomes thinner when stretched; this is not a change to a different epithelial class.
04Which structures should you point out on this reference?+
Umbrella cells; Intermediate cells; Basal cells. Forms a distensible urine-resistant barrier in much of the urinary tract.
Read the references.
Credited anatomical plates, microscopy and university teaching references. Individual image credits appear below the viewer. Historical plates can use older terminology; use the lesson text for current names.