uroepiteelin
Uroepiteelin, also known as urothelium, is a specialized type of transitional epithelium that lines the urinary tract. It is found in the renal pelvis, ureters, urinary bladder, and the proximal part of the urethra. This tissue is characterized by its ability to undergo significant changes in shape, expanding and contracting to accommodate varying volumes of urine. The urothelium's unique structure plays a crucial role in preventing the reabsorption of water and electrolytes from the urine and protecting the underlying tissues from the cytotoxic effects of urine components.
The cells of the uroepiteelin are arranged in multiple layers. The superficial cells, known as umbrella cells
The uroepiteelin serves several vital functions. Its primary role is to act as a barrier, preventing the