Table of Muscles

Muscle Origin Insertion Action Nerve
Supply
biceps brachii
  • long head
  • short head
  • supraglenoid tubercle
    of humerus
  • coracoid process
    of humerus
radial tuberosity flexes arm and forearm
supinates hand
musculocutaneous
coracobrachialis coracoid process of scapula inner aspect of humeral shaft flexes and adducts arm musculocutaneous
brachialis distal 2/3rds of humerus coronoid process of ulna flexes forearm musculocutaneous
triceps
  • long head
  • lateral head
  • medial head
  • infraglenoid tubercle of scapula
  • upper lateral aspect of humerus
  • lower medial aspect of humerus
olecranon process of ulna extends arm and forearm radial
brachioradialis upper 2/3rds lateral supracondylar ridge & anterior surface of intermuscular septum lateral side of lower end of radius just above the styloid process flexes at the elbow especially when forearm is in midprone position radial
pronator teres medial epicondyle of humerus
coronoid process of ulna
lateral aspect of shaft of radius pronates hand, flexes forearm median
supinator deep portion: supinator crest & anular ligament & oblique cord.
superficial portion: lateral epicondyle & radial collateral ligament
upper oblique half of anterior surface of radius and its lateral surface following pronation, the supinator supinates the radius deep branch, radial nerve
flexor carpi radialis medial epicondyle of humerus bases of 2nd and 3rd metacarpal bones flex forearm and hand
aid in pronation and abduction
of hand
median
palmaris longus medial epicondyle of humerus flexor retinaculum of palm of hand flexes hand and wrinkles skin of palm of hand median
flexor digitorum superficialis medial epicondyle of humerus
coronoid process of ulna
anterior border of radius
tendons split to attach to lateral
sides of middle phalanges
flexes phalanges, wrist, and forearm median
flexor carpi ulnaris medial epicondyle of humerus
olecranon process and posterior
border of ulna
pisiform, hamate
base of 5th metacarpal
flexes forearm and hand, adducts hand ulnar
flexor pollicis longus radius and interosseous membrane base of distal phalanx of thumb flexes thumb median
flexor digitorum profundus upper anterior 3/4ths aspect of ulna
and adjacent interosseous membrane
base of distal phalanges of fingers flexes phalanges radial half by median
ulnar half by ulnar
pronator quadratus distal anterior aspect of ulna distal anterior aspect of radius pronates hand median
Arteries of Forearm Bones of the Hand

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