Male urinary sagittal section
Urine flows from the kidney through the ureters into the urinary bladder where it is temporarily stored. As the bladder becomes distended with urine, nerve impulses from the bladder signal the brain that it is full which gives the individual the urge to void. By voluntarily relaxing the sphincter muscle around the urethra, the bladder can be emptied of urine. Urine then flows out through the urethra.
- Last Reviewed on 10/03/2005
- A.D.A.M. Medical Illustration Team
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This page was last updated: May 31, 2013