What type of epithelium is this and where is it found?

Study for the CAMLPR Histology Practice Test. Study with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

The main concept is recognizing transitional epithelium (urothelium), which is specialized to stretch. This tissue is multi-layered with basal and intermediate cells and a distinctive apical layer of dome-shaped umbrella cells. When the urinary bladder or ureters fill, these superficial cells flatten and stretch, allowing expansion while maintaining a barrier to urine. That stretchability and the characteristic dome-shaped surface cells point to urothelium, which lines the urinary tract—bladder, part of the ureters, and the upper urethra. The other options don’t fit because stratified squamous epithelium would show a keratinized outer surface like skin, simple columnar epithelium is a single layer of tall cells typical of the stomach lining, and pseudostratified ciliated columnar epithelium has cilia on the apical surface with nuclei at varying heights as seen in the trachea.