Sphincter
noun
A ring of muscle surrounding and serving to guard or close an opening or tube in the human or animal body.
The doctor explained how the stomach's sphincter works to prevent acid from moving upwards.

Often appears as...
- sphincter muscle
- lower esophageal sphincter
Usage tips
Technical
noun
A ring of muscle surrounding and serving to guard or close an opening or tube in the human or animal body.
The doctor explained how the stomach's sphincter works to prevent acid from moving upwards.

Often appears as...
- sphincter muscle
- lower esophageal sphincter
Usage tips
Technical
Definition 1 of 1

Medical Context
Used in health and anatomy discussions, indicating a scientific or medical setting.

During surgery, the sphincter muscles must be carefully managed.
Controlled Movement
Emphasizes the function of a sphincter in controlling the flow of substances.

The bladder sphincter regulates urine elimination from the body.
Various Sphincters
Sphincters are found throughout the body; understanding the context is essential.

The pyloric sphincter is key in the digestive system, unlike the eyelid sphincter.
Medical Context
Used in health and anatomy discussions, indicating a scientific or medical setting.

During surgery, the sphincter muscles must be carefully managed.
Controlled Movement
Emphasizes the function of a sphincter in controlling the flow of substances.

The bladder sphincter regulates urine elimination from the body.
Various Sphincters
Sphincters are found throughout the body; understanding the context is essential.

The pyloric sphincter is key in the digestive system, unlike the eyelid sphincter.
Medical Context
Used in health and anatomy discussions, indicating a scientific or medical setting.

During surgery, the sphincter muscles must be carefully managed.
Controlled Movement
Emphasizes the function of a sphincter in controlling the flow of substances.

The bladder sphincter regulates urine elimination from the body.
Various Sphincters
Sphincters are found throughout the body; understanding the context is essential.

The pyloric sphincter is key in the digestive system, unlike the eyelid sphincter.
Video examples
Is it bad to hold your...
But under normal circumstances, your decision to urinate stops the brain's signal to the external urethral sphincter, causing it to relax and the bladder to empty. The external urethral sphincter is one of the muscles of the pelvic floor, and it provides support to the urethra and bladder neck. It's lucky we have these pelvic floor muscles
Video examples
The surprisingly...
Us humans are actually one of the very few animals that do this in such an advanced and clean way. To be honest, I had some newfound respect for that nice, inner sphincter dude --
Video examples
Is it bad to hold your...
But under normal circumstances, your decision to urinate stops the brain's signal to the external urethral sphincter, causing it to relax and the bladder to empty. The external urethral sphincter is one of the muscles of the pelvic floor, and it provides support to the urethra and bladder neck. It's lucky we have these pelvic floor muscles
Video examples
The surprisingly...
Us humans are actually one of the very few animals that do this in such an advanced and clean way. To be honest, I had some newfound respect for that nice, inner sphincter dude --
Example 1 of 2
Quote examples
Matthew Green
British Poet
Avarice, the sphincter of the heart.

Quote examples
Matthew Green
British Poet
Avarice, the sphincter of the heart.

Example 1 of 1
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