Muscles Crossing the Elbow Joint

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Anterior Muscle

1. Biceps Brachii (Long head) 2. Brachialis 3. Brachioradialis

Triceps Brachii "3 heads arm"

1. Long Head 2. Lateral head 3. Medial Head Location: > Posterior Muscles of arm Action: > Forearm extensor Origin: > Long Head -- Infraglenoid tubercle of scapula > Lateral Head -- posterior shaft of humerus > Medial Head -- Posterior shaft of humerus distal groove Insertion: > By common tendon into olecranon of Ulna

Biceps brachii Origin

Coracoid Process

Muscles Crossing the Elbow Joint

Muscles Crossing the Elbow Joint "Flexion & Extension of the forearm"

Biceps brachii Insertion

Tendon of radial tuberosity

Brachialis

Location: > Deep to Biceps Brachii on distal Humerus Action: > Flexes forearm Origin: > Anterior surface of distal humerus; embraces insertion of deltoid muscle Insertion: > Coronoid process of Ulna & Capsule of elbow joint

Brachioradialis

Location: > Superficial muscle of Lateral forearm Action: > Synergists in forearm flexion Origin: > Lateral Subcondylar at distal end of humerus Insertion: > Base of styloid process of radius

Biceps Brachii

Location: >Superficial Anterior Arm > Short--Medial anterior > Long-- Lateral anterior Action: >Flexes and supinates forearm Origin: > Short Head: Coracoid Process (Scapula) > Long Head: Supraglenoid tubercle & lip of glenoid cavity (Scapula) >Tendon of long head runs within capsule of shoulder joint & descends into intertubercle sulcus of humerus Insertion: > By common tendon of radial tuberosity


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