Answer:
The correct answer is the secretions of the urothelium.
Explanation:
The epithelium coating the urinary bladder surface is known as the urothelium. It is a specific kind of cell exhibiting high elasticity and numerous cellular activities. It signifies the initial line of bladder resistance and a boundary in between the defense mechanisms and pathogens. The purposes of the urothelium comprise immune responses, control of permeability, and communication between the cells that appears to perform the main role in reacting towards infections and injuries.