The smooth muscle (caled the Detrousar muscle) that is part of the bladder contractsto help push urine out. The bladder also has two sphincters the internal, or involuntary and the external, or voluntary sphincters are also muscle.
bladder sphincter
Yes, a urethral sphincter controls the release of urine. This is a "flap" that is found between the kidneys and urethra that opens and closes to keep urine in, or let it down to be urinated out.
The Bladder Wall
Mainly the urinary sphincters prevent the backflow of urine backwards into the bladder and the kidneys. Sphincters allow one-way flow and to prevent leakage (or in other words, prevent accidental urine loss).
The urethral meatus controls the release of urine from the bladder to the outside of the body. It acts as a sphincter, helping to regulate the flow of urine. The contraction and relaxation of muscles around the meatus help to control the process of urination.
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 )
a ring of muscle that controls the release of an organs products. EXAMPLE: Pyloric Sphincter controls release of chyme. Cardiac Sphincter controls deposition of food into the stomach from the esophagus. External Urethral Sphincter controls release of urine. External Anal Sphincter controls release of defecation.
SmooTh muscle
Autonomic system
kidneys
The heart.
heart