upper body muscles - origin, insertion, and action

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biceps brachii - action

Forearm: supination, flexion Arm: flexion

triceps brachii - origin

Long: infraglenoid tubercle Medial & Lateral: posterior humerus

biceps brachii - origin

Long: supraglenoid tubercle Short: coracoid process

supraspinatus - action

assists deltoid with abduction of humerus

teres minor - origin

axillary (lateral) border of scapula

deltoid - origin

clavicle acromion spine of scapula

deltoid - insertion

deltoid tuberosity

trapezius - action

elevates scapula and clavicle extends head and neck

latissimus dorsi - action

extension, adduction & medial rotation of humerus

teres major - action

extension, adduction & medial rotation of humerus

trapezius - origin

external occipital protuberance Ligamentum nuchae Spinous process (C7-T12)

deltoaid - action

flexion, extension, abduction, medial/lateral rotation of humerus

infraspinatus - insertion

greater tubercle of humerus

supraspinatus - insertion

greater tubercle of humerus

teres minor - insertion

greater tubercle of humerus

teres major - origin

inferior angle & axillary (lateral) borders of scapula

infraspinatus - origin

infraspinous fossa of scapula

latissimus dorsi - insertion

intertubercular sulcus of humerus

teres major - insertion

intertubercular sulcus of humerus

infraspinatus - action

lateral rotation of humerus

teres minor - action

lateral rotation of humerus

subscapularis - insertion

lesser tubercle of humerus

subscapularis - action

medial rotation of humerus

triceps brachii - insertion

olecrannon process

biceps brachii - insertion

radial tuberosity

triceps brachii - action

shoulder and elbow extension

trapezius - insertion

spine and acromion of scapula clavicle

latissimus dorsi - origin

spinous process (T6-T12) ribs (8-12) sacrum & ilium

subscapularis - origin

subscapular fossa of scapula

supraspinatus - origin

supraspinous fossa of scapula


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