internal urethral sphincter

internal sphincter muscle of urethra

A urethral sphincter muscle which constricts the internal urethral orifice. It is the junction of the urethra with the urinary bladder. The muscle is made of smooth muscle, so therefore it is under involuntary control. It is kept tonically contracted by the sympathetic nervous system and during micturition, is relaxed via the parasympathetic nervous system. This is the primary muscle for preventing the release of urine[WP].

类型 Muscle
上级结构 urethral sphincter
拉丁名称 internal sphincter muscle of urethra
FMA ID 45769

常见问题

What is the internal urethral sphincter?
A urethral sphincter muscle which constricts the internal urethral orifice. It is the junction of the urethra with the urinary bladder. The muscle is made of smooth muscle, so therefore it is under involuntary control. It is kept tonically contracted by the sympathetic nervous system and during mict
What is the Latin name for the internal urethral sphincter?
The Latin name for the internal urethral sphincter is internal sphincter muscle of urethra.

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