Definition

Noun: * A specific muscle of the chest wall: The serratus anterior is a large, fan-shaped muscle that originates on the surface of the upper eight or nine ribs and inserts along the medial border of the scapula (shoulder blade). Its primary functions are to protract the scapula (pull it forward around the rib cage), to hold it firmly against the thoracic wall, and to assist in upward rotation of the scapula, which is essential for raising the arm overhead.

Examples of Usage

• Noun:
  • A strong serratus anterior is crucial for boxers when throwing a punch.
  • The physical therapist identified weakness in the patient's serratus anterior.
  • The serratus anterior is sometimes called the "boxer's muscle" due to its role in protracting the scapula.

Advanced Usage

• "Serratus anterior syndrome": A condition involving pain and sometimes nerve-related symptoms due to dysfunction or tightness of the serratus anterior muscle.
  • The athlete was diagnosed with serratus anterior syndrome after complaining of persistent shoulder and rib pain.

Variants and Related Words

• Serratus (noun): Refers to any of the three serratus muscles (anterior, posterior superior, posterior inferior). The name comes from the Latin meaning "saw-shaped," describing the muscle's jagged, finger-like origins on the ribs.
• Anterior serratus (noun): An alternative, less common name for the serratus anterior.

Synonyms

• Serratus magnus (noun, historical/less common): An older anatomical term for the serratus anterior.
• Boxer's muscle (noun, informal): A colloquial name highlighting one of its primary actions.

Related Phrases and Concepts

• Scapular winging: A condition often caused by paralysis or severe weakness of the serratus anterior, where the medial border of the shoulder blade protrudes from the back.
  • Scapular winging is a classic sign of a dysfunctional serratus anterior.
• Scapular protraction: The primary action performed by the serratus anterior, moving the shoulder blade forward.
  • The serratus anterior is the prime mover for scapular protraction.

Noun

1. muscles that rotate the scapula and elevate the rib cage