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upper arm bone, arteries, nerves - >- HUMERUS: shaft (with bicipital groove), head, neck, tuberosities,
condyles and epicondyles (medial = trochlea, lateral = capitulum), coronoid fossa (anterior), olecranon
fossa (posterior)
- ARTERIES: (1) brachial artery - anteromedial in upper arm, moves laterally and anteriorly at elbow to
form ulnar and radial arteries (2) profunda brachii arterty
- NERVES: median (through carpal tunnel), ulnar ("funny bone"), radial
muscles of the upper arm anterior compartment - >- BICEPS BRACHII: elbow flexion, supination, assists
in shoulder flexion, o: supraglenoid tubercle and coracoid, i: radial tuberosity and forearm fascia
- BRACHIALIS: elbow flexion, o: anterior surface of humerus, i: coronoid of ulna
- CORACOBRACHIALIS: assists with shoulder flexion
muscles of upper arm posterior compartment - >- TRICEPS BRACHII: elbow extension, o: infraglenoid
tubercle, upper lateral and lower medial halves of the posterior humerus shaft, i: olecranon of ulna
- ANCONEUS: assists triceps brachii
elbow bones and joint type - >- JOINT TYPE: synovial hinge joint
- BONES: (1) radius - articulates with capitulum and with raid notch of ulna, distal articulation with ulna,
interosseous membrane between radius and ulna shafts (2) ulna - olecranon process and coronoid
process, trochlear notch articulates with trochlea
elbow ligaments, movements, cubital fossa - >- LIGAMENTS: capsular, medial (ulnar) collateral and
lateral (radial) collateral
- MOVEMENTS: flexion and extension (pronation and supination occur at radioulnar joints)
- CUBITAL FOSSA: anterior, inverted triangle, contains median and radial nerves, brachial artery and its
derivatives and tendon of biceps brachii
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