Transitional epithelial cells are primarily found in the urinary system, specifically lining the urinary bladder, ureters, and parts of the urethra. These specialized cells play a crucial role in accommodating the fluctuations in the volume of urine stored in the bladder.
One of the key features of transitional epithelium is its ability to stretch and change shape. When the bladder is empty, the cells appear more cuboidal, but as the bladder fills, they flatten out to allow for expansion. This unique characteristic is essential for the bladder’s function, as it needs to expand significantly to hold varying amounts of urine without tearing.
In summary, if you’re looking for transitional epithelial cells, the best places to check are the urinary bladder and the ducts leading to and from the bladder, due to their important role in urinary storage and regulation.