Below is an instruction from Human. Write a response.
    ### Instruction:
    What are the treatments for Nerve Disease and Bladder Control ?
    ### Response:
    The job of the sphincter muscles is to hold urine in the bladder by squeezing the urethra shut. If the urethral sphincter fails to stay closed, urine may leak out of the bladder. When nerve signals are coordinated properly, the sphincter muscles relax to allow urine to pass through the urethra as the bladder contracts to push out urine.
    