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The bladder.
bladder sphincter
Smooth muscle surrounding the bladder pushes urine out of the urethra.
sphincter
The Bladder Wall
Detrusor muscle is found in the urinary bladder.
Urinary bladder mainly contains two types of musces 1. Smooth muscles, forming the wall of the bladder ( Detrusor muscle ) and the internal urethral sphincter ( which controls the flow of urine which is involuntary ), and 2. Skeletal muscle, which forms the external urethral sphicter with which we can control the flow of urine.. ( voluntary control of flow )
Substances in the urine that irritate the bladder may cause the bladder muscle to malfunction. The presence of a urinary tract infection and the ingestion of excess caffeine can act as irritants.
The bladder stores urine before it is urinated out of the body.
The ureters move urine from the kidney to the bladder by something known as peristalsis. This is a wave like series of muscle contractions. The lining of smooth muscles in the ureter move the urine to the bladder.
The urethra sphincter is a muscle that keeps the urine in your bladder. It is not a condition, so it has no symptoms.