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Glite Dictionary
musculus sphincter ani internus

musculus sphincter ani internus

9.3
A ring of muscle inside the anus that keeps stool in without thinking
  • noun
  • /ˈmʌskjələs ˈsfɪŋktər ˈɑːni ɪnˈtɜrnəs/
  • Specialized
translation icon : músculo esfínter anal interno
  • The musculus sphincter ani internus is responsible for maintaining resting tone in the anal canal.

Examples

  • During rectal surgery, care must be taken not to damage the musculus sphincter ani internus.

  • Disorders affecting the musculus sphincter ani internus can lead to problems with involuntary release of stool.

  • The musculus sphincter ani internus is crucial for bowel control.

  • Doctors explain the function of the musculus sphincter ani internus during consultations.

  • Disorders affecting the musculus sphincter ani internus can lead to problems with involuntary release of stool.

  • During rectal surgery, care must be taken not to damage the musculus sphincter ani internus.

  • The musculus sphincter ani internus is responsible for maintaining resting tone in the anal canal.

Surface Forms

musculus sphincter ani internus singular
musculi sphincter ani internorum plural

Morphology

musculus + sphincter + ani + internus

This is a literal concatenation of Latin anatomical elements: musculus (muscle) + sphincter (muscle that closes an opening) + ani (of the anus) + internus (internal), so the overall meaning — the internal anal sphincter muscle — is directly derivable from the parts. Although technical and in Latin word order, the composition is transparent and cross-linguistically predictable for learners who know each constituent.

Etymology

The name musculus sphincter ani internus is Latin: musculus means 'muscle', sphincter means 'tightener', ani means 'anus', and internus means 'inside'. So the name gives a clear image of an inner muscle that keeps the anus closed and works without you thinking about it.