Main muscles of the upper limb	Shoulder muscles: deltoid, supraspinatus, infraspinatus, teres major, teres minor, subscapularis Anterior compartment of arm: brachialis, biceps brachii Posterior compartment of arm: triceps brachii muscle Anterior compartment of forearm: pronator teres, flexor carpi radialis, palmaris longus, flexor carpi ulnaris, flexor digitorum superficialis, pronator quadratus Posterior compartment of forearm: extensor digitorum, extensor carpi ulnaris, extensor carpi radialis longus, brachioradialis Hand muscles: thenar muscles, hypothenar muscles, dorsal metacarpal muscles, adductor pollicis, palmaris brevis
Main actions of the upper limb muscle groups	Shoulder muscles: abduction, adduction, flexion, extension, internal and external rotation of the shoulder joint Anterior compartment of arm: flexion of the forearm Posterior compartment of arm: extension of forearm Anterior compartment of forearm: flexion of the hand and fingers Posterior compartment of forearm: extension of the hand and fingers Hand muscles: adduction, abduction, flexion, extension and opposition of fingers

Main muscles of the upper limb

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