deltoid muscles
Arm-raising muscles
The deltoid muscles are the thick triangular muscles that cap the shoulders, responsible for raising and rotating the arms.
Named for their resemblance to the Greek letter delta (Δ), they give the shoulder its rounded contour.
Athletes and bodybuilders often target the deltoids—or simply delts—for upper body definition.
- shoulderUpper arm joint
- abductionUnlawful seizure of person
- contractionReduction in size
- shoulder pressLifting weight vertically overhead
- pressApply force downward
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