musculus sphincter ani

Thân thiện

The musculus sphincter ani is a ring-shaped muscle that controls the opening and closing of the anal canal.

Definition

Noun: - The sphincter muscle of the anus: This term refers specifically to the ring of muscle that surrounds and controls the opening of the anus, responsible for maintaining continence.

Usage Notes

• This is a technical, anatomical term. It is primarily used in medical, biological, and academic contexts.
• In everyday language, people typically refer to this muscle more generally as the "anal sphincter."

Examples

• Noun:
  • Damage to the musculus sphincter ani during childbirth can lead to incontinence.
  • The surgeon carefully repaired the torn musculus sphincter ani.

Advanced Usage

• The term is often broken down into its specific components in detailed anatomical study: the (internal anal sphincter) and the (external anal sphincter).

Variants and Related Words

• Anal sphincter: The common, less technical term for the same structure.
• Sphincter: The general term for a circular muscle that constricts or closes an orifice.
• Internal anal sphincter (musculus sphincter ani internus): The involuntary, smooth muscle component.
• External anal sphincter (musculus sphincter ani externus): The voluntary, skeletal muscle component.

Synonyms

• Anal sphincter
• Anorectal sphincter (in broader context)

Related Phrases

• Sphincter control: Refers to the voluntary or involuntary regulation of this muscle.
  • Pelvic floor exercises can help improve sphincter control.
• Sphincter injury: Damage to this muscle group.
  • The patient was treated for a severe sphincter injury.

Học thuật

Noun

1. the sphincter muscle of the anus

Từ đồng nghĩa

• anal sphincter
• sphincter ani