deltoids
Triangular shoulder muscles
The deltoids are the thick triangular muscles capping each shoulder, responsible for raising and rotating the arm.
Named for their resemblance to the Greek letter delta (Δ), they're a focus of upper-body training: His deltoids were massive from years of overhead pressing.
Often shortened to delts: shoulder exercises that target the delts.
Upper arm's long bone
- clavicleHorizontal bone above ribs
- scapulaPosterior thoracic bone
- acromionScapular apex forming shoulder's summit
- rotator cuffShoulder's muscular support system
trapezius · pectoralis · biceps · triceps · rhomboids · joint capsule · muscle fibers · insertion point
Reduction in size
- hypertrophyTissue enlargement via cells
- atrophyWasting from disuse
- muscle fibersContractile cells in tissue
- activationSetting into operation
recruitment · abduction · flexion · extension · rotation · stabilization · kinesiology · biomechanics
Shoulder isolation movement
- overhead pressStanding shoulder exercise
- front raiseAnterior deltoid exercise
- shoulder pressLifting weight vertically overhead
- military pressShoulder strength exercise
upright row · face pull · dumbbell press · barbell press · isolation · compound · volume · reps
Statement of meaning
- separationState of being apart
- symmetryInvariance under transformation
- proportionComparative relation of parts
- striationsParallel linear markings
vascularity · shoulder width · bodybuilding · physique · posing
Striking or pressing upon
- bursitisInflamed joint cushions
- tendinitisInflamed tissue joining muscle to bone
- strainExcessive stretching force
- tearTo pull apart
inflammation · rotator cuff tear · frozen shoulder · rehabilitation · physical therapy · rest · ice · recovery
humerus
Upper arm's long bone
- clavicleHorizontal bone above ribs
- scapulaPosterior thoracic bone
- acromionScapular apex forming shoulder's summit
rotator cuff · trapezius · pectoralis · biceps · triceps · rhomboids · joint capsule · muscle fibers · insertion point · origin point
contraction
Reduction in size
- hypertrophyTissue enlargement via cells
- atrophyWasting from disuse
- muscle fibersContractile cells in tissue
activation · recruitment · abduction · flexion · extension · rotation · stabilization · kinesiology · biomechanics · innervation
lateral raise
Shoulder isolation movement
- overhead pressStanding shoulder exercise
- front raiseAnterior deltoid exercise
- shoulder pressLifting weight vertically overhead
military press · upright row · face pull · dumbbell press · barbell press · isolation · compound · volume · reps · sets
definition
Statement of meaning
- separationState of being apart
- symmetryInvariance under transformation
- proportionComparative relation of parts
striations · vascularity · shoulder width · bodybuilding · physique · posing
impingement
Striking or pressing upon
- bursitisInflamed joint cushions
- tendinitisInflamed tissue joining muscle to bone
- strainExcessive stretching force
tear · inflammation · rotator cuff tear · frozen shoulder · rehabilitation · physical therapy · rest · ice · recovery · overuse