Sphincter

usgb/ˈsfɪŋktər/
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.
Visual representation of "sphincter" - A ring of muscle surrounding and serving to guard or close an opening or tube in the human or animal body.

Often appears as...

  • sphincter muscle
  • lower esophageal sphincter

Usage tips

Technical

Definition 1 of 1
Visual representation of "sphincter"
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Medical Context

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

Illustration for Medical Context
During surgery, the sphincter muscles must be carefully managed.
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Controlled Movement

Emphasizes the function of a sphincter in controlling the flow of substances.

Illustration for Controlled Movement
The bladder sphincter regulates urine elimination from the body.
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Various Sphincters

Sphincters are found throughout the body; understanding the context is essential.

Illustration for Various Sphincters
The pyloric sphincter is key in the digestive system, unlike the eyelid sphincter.
Visual representation of the word "Sphincter"

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