ANATOMY

Detailed explanation-1: -The inner lining of the urinary bladder is a mucous membrane of transitional epithelium that is continuous with that in the ureters. When the bladder is empty, the mucosa has numerous folds called rugae. The rugae and transitional epithelium allow the bladder to expand as it fills.

Detailed explanation-2: -Lining epithelium: The urinary bladder lining is a specialized stratified epithelium, the urothelium. The urothelium is exclusively in urinary structures such as the ureter, urinary bladder, and proximal urethra.

Detailed explanation-3: -The urothelium is the inner lining of the bladder. It is made up of urothelial cells (also called transitional cells). The urothelium is also called the transitional epithelium. The lamina propria (also called the submucosa) is a thin layer of connective tissue that surrounds the urothelium.

Detailed explanation-4: -The bladder is located in the lesser pelvis when empty and extends into the abdominal cavity when full. In children, the bladder is located in the abdomen and does not completely descend into the pelvis until puberty. The bladder is a distensible organ and is typically able to hold up to 500 milliliters of urine.

Detailed explanation-5: -Transitional epithelium: A transitional epithelium (also known as urothelium) is made up of several layers of cells that become flattened when stretched. It lines most of your urinary tract and allows your bladder to expand.