Transitional epithelium

Transitional epithelium
Transitional epithelium
Transitional epithelium of the bladder, known as urothelium. The rounded surface of the apical cells is a distinguishing characteristic of this type of epithelium.
Details
System	Urinary system
Identifiers
TH	H2.00.02.0.02033
Anatomical terms of microanatomy

Transitional epithelium animation, highlighting the epithelial layer, then underlying connective tissue. Contrast the messy appearance of the epithelial surface to other epithelial tissues.

Transitional epithelium, also known as urothelium is a type of stratified epithelium that changes shape in response to stretching.. Transitional epithelium usually appears cuboidal when relaxed and squamous when stretched. This tissue consists of multiple layers of epithelial cells which can contract and expand in order to adapt to the degree of distension needed. Transitional epithelium lines all of the organs of the urinary system – the kidneys, ureters, bladder, and the urethra, hence its alternative name of urothelium. The bladder, for example, has a need for great distension.