pectoralis major
Definition
- Noun:
- A large chest muscle: The "pectoralis major" is a thick, fan-shaped skeletal muscle situated in the chest region. It is the larger of the two major chest muscles.
- Primary function: Its main actions are to adduct (pull the arm toward the body) and medially rotate the arm at the shoulder joint. It also assists in flexing the arm (bringing it forward).
Usage Examples
- Noun:
- Strengthening the pectoralis major is a key goal for many bodybuilders.
- The surgeon carefully identified the pectoralis major before beginning the procedure.
- A tear in the pectoralis major can be a serious injury for athletes.
Advanced Usage
- Anatomical reference: In medical and fitness contexts, the term is often used precisely to distinguish it from the smaller underlying muscle, the pectoralis minor.
- The exercise primarily targets the clavicular head of the pectoralis major.
Variants and Related Words
- Pecs (n, informal): A common slang term for the pectoralis major muscles.
- He worked hard to build his pecs.
- Pectoralis minor (n): The smaller, thinner muscle lying beneath the pectoralis major.
- Pectoral (adj): Relating to the chest or breast. (e.g., pectoral girdle, pectoral fin).
Synonyms
- Pectoral muscle: A more general term that can refer to either the major or minor chest muscle.
- Chest muscle: A common, non-technical term.
Related Phrases
- "To work the pecs": An informal phrase meaning to exercise the pectoralis major muscles.
- This bench press variation really works the pecs.
Noun
-
a skeletal muscle that adducts and rotates the arm
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