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Musculus Sphincter Ani Internus (Noun)

Meaning

An internal ring of smooth muscle formed by circular fibers of the rectum.

Classification

Nouns denoting body parts.

Examples

  • The musculus sphincter ani internus is a component of the anal sphincter, providing involuntary control over the opening and closing of the anus.
  • In humans, the musculus sphincter ani internus is composed of smooth muscle fibers arranged in a circular fashion around the anal canal.
  • The musculus sphincter ani internus is an involuntary muscle, meaning its contractions are not under conscious control.
  • During continence, the musculus sphincter ani internus maintains a resting tone that helps to prevent involuntary defecation.
  • The musculus sphincter ani internus relaxes during defecation to allow for the passage of stool from the rectum.

Hypernyms

  • Involuntary Muscle
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