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attachments, actions, innervations

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muscle
origin
insertion
action
nerve
Coracobrachialis   Corocoid process of scapula   Middle of medial shaft of humerus   Flexes and adducts the humerus   Musculocutaneous  
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Triceps Brachii(3 heads)   Long head- Infraglenoid tubercle of scapula Lateral head- Posterior surface of proximal half of humerus Medial head- Posterior surface of distal half of humerus   All heads- Olecranon process of ulna   Long head- Extends and adducts the shoulder All heads- Extend the forearm (elbow)   Radial nerve  
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Anconeus   Lateral epicondyle of humerus   Lateral surface of olecronon and superior part of posterior surface of ulna   Assist triceps in extending forearm; Stabalize elbow joint; Abducts ulna during pronation   Radial nerve  
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Deltoid Muscle(3 parts)   Lateral 1/3 of clavicle, acromion and spine of scapulae   Deltoid tuberosity of humerus   Ant: Flexes and medialy rotates arm Mid: Abducts arm Post: Extends and laterally rotates arm   Axillary nerve  
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Biceps Brachii(2 heads)   Short head- Coracoid process of scapula Long head- Supraglenoid tubercle of scapula   Tuberosity of the radius and aponeurosis of biceps brachii   Flexes elbow, supinates forearm, flexes shoulder joint   Musculocutaneous  
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Brachialis   Distal half of the anterior surface of humerus   Tuberosity and coronoid process of ulna   Flexes the elbow   Musculocutaneous  
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Created by: mgrills26
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