Definition

Noun: - The triceps brachii muscle: A large skeletal muscle located at the back of the upper arm. It has three points of origin (the long head, lateral head, and medial head) and a single insertion. Its primary function is to extend the forearm at the elbow joint when it contracts.

Usage

• The term "musculus triceps brachii" is the formal anatomical name. In common and medical usage, it is almost always shortened to "triceps" or "triceps brachii."
• It is used to describe the specific muscle in contexts related to anatomy, physiology, medicine, and physical fitness.

Examples

• Anatomy Context:

  • The musculus triceps brachii is the main antagonist to the biceps brachii.
  • An injury to the musculus triceps brachii can impair elbow extension.

• Fitness Context:

  • Strengthening the triceps brachii is crucial for pushing movements.
  • This exercise specifically targets the long head of the musculus triceps brachii.

Advanced Usage

• "Triceps brachii tendon": Refers to the tendon that attaches the muscle to the ulna bone in the forearm.

  • The triceps brachii tendon can be prone to inflammation in weightlifters.

• "Innervation of the musculus triceps brachii": Refers to the nerve supply, which is the radial nerve.

  • The innervation of the musculus triceps brachii comes from the radial nerve (C6-C8).

Variants and Related Words

• Triceps (noun): The common shortened form of "musculus triceps brachii."

  • He focused on his triceps during his arm workout.

• Triceps brachii (noun): The standard abbreviated anatomical term.

  • The triceps brachii comprises three distinct heads.

• Tricep (noun, informal): A common but technically incorrect singular form of "triceps." (Note: "Triceps" is both singular and plural in formal contexts).

  • I felt a strain in my left tricep.

Synonyms

• Triceps muscle: A direct synonym.
• Extensor muscle of the forearm: A functional description of its primary action.

Related Phrases

• "Three-headed muscle of the arm": A descriptive phrase highlighting its three origins.
  • The three-headed muscle of the arm is essential for straightening the elbow.

Related Idioms

There are no common idioms specifically for "musculus triceps brachii." Idioms related to strength or arms (e.g., "twist someone's arm") are not directly tied to this anatomical term.

Noun

1. the skeletal muscle having three origins that extends the forearm when it contracts