Muscles (Upper trap - Diaphragm+ Coracobrachialis - Delts
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| Upper Trapezius PA | External occipital protuberance, medial third of superior nuchal line, nuchal ligament.
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| Upper Trapezius DA | Lateral third of clavicle and acromion.
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| Upper Trapezius N | CN XI Spinal accessory nerve and VR C3, C4
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| Upper Trapezius A | Elevates, adducts, and upwardly rotates scapula.
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| Middle Trapezius PA | SP T1-5.
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| Middle Trapezius DA | Medial margin of acromion and superior lip of spine of scapula.
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| Middle Trapezius N | CN XI Spinal accessory nerve and VR C3, C4
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| Middle Trapezius A | Adducts the scapula.
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| Lower Trapezius PA | SP T6-T12.
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| Lower Trapezius DA | Tubercle at apex of spine of scapula.
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| Lower Trapezius N | CN XI Spinal accessory nerve and VR C3, C4
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| Lower Trapezius A | Depresses, adducts, upwardly rotates scapula.
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| Latissimus Dorsi PA | SP T7-T12, thoracolumbar fascia, iliac crest, and inferior 4 ribs.
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| Latissimus Dorsi DA | Floor of intertubercular groove of humerus.
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| Latissimus Dorsi N | Thoracodorsal n. (C6, C7).
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| Latissimus Dorsi A | Extends, adducts, and internally rotates humerus.
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| Rhomboid Major and Minor PA | Major = SP T2-5. Minor = Nuchal ligament and SP C7, T1.
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| Rhomboid Major and Minor DA | Medial border of scapula from level of spine to inferior angle.
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| Rhomboid Major and Minor N | Dorsal scapular n. (C5).
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| Rhomboid Major and Minor A | Adducts, elevates, and downwardly rotates scapula.
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| Levator Scapulae PA | TP C1-4.
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| Levator Scapulae DA | Superior part of medial border of scapula.
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| Levator Scapulae N | Dorsal scapular n. (C5).
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| Levator Scapulae A | Elevates and downwardly rotates scapula.
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| Teres Major PA | Dorsal surface of inferior angle of scapula.
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| Teres Major DA | Medial lip of intertubercular groove of humerus.
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| Teres Major N | Lower Subscapular n. (C6).
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| Teres Major A | Extends, adducts, and internally rotates humerus.
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| Supraspinatus PA | Supraspinous fossa of scapula.
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| Supraspinatus DA | Superior facet of greater tubercle of humerus.
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| Supraspinatus N | Suprascapular n. (C5).
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| Supraspinatus A | Abducts humerus; depresses and compresses humeral head in glenoid.
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| Infraspinatus PA | Infraspinous fossa of scapula.
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| Infraspinatus DA | Middle facet of greater tubercle of humerus.
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| Infraspinatus N | Suprascapular n. (C5).
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| Infraspinatus A | Externally rotates humerus; depresses and compresses humeral head in glenoid.
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| Teres Minor PA | Middle part of lateral border of scapula.
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| Teres Minor DA | Inferior facet of greater tubercle of humerus.
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| Teres Minor N | Axillary n. (C5).
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| Teres Minor A | Externally rotates humerus; depresses and compresses humeral head in glenoid.
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| Subscapularis PA | Subscapular fossa.
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| Subscapularis DA | Lesser tubercle of humerus.
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| Subscapularis N | Upper and Lower subscapular n.’s (C6).
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| Subscapularis A | Internally rotates humerus; depresses and compresses humeral head in glenoid.
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| Pectoralis Major PA | Clavicular head: Medial half of clavicle.
Sternocostal head: Sternum, superior 6 costal cartilages, and aponeurosis of external oblique muscle.
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| Pectoralis Major DA | Lateral lip of intertubercular groove of humerus.
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| Pectoralis Major N | Lateral and medial pectoral n.’s (C6, C7, C8).
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| Pectoralis Major A | Adducts and internally rotates humerus.
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| Pectoralis Minor PA | 3rd to 5th ribs near their costal cartilages.
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| Pectoralis Minor DA | Coracoid process of scapula.
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| Pectoralis Minor N | Medial pectoral n. (C8, T1).
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| Pectoralis Minor A | Stabilizes scapula by drawing it inferiorly and anteriorly against the thoracic wall.
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| Serratus Anterior PA | External surfaces of lateral parts of 1st to 8th ribs.
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| Serratus Anterior DA | Anterior surface of medial border of scapula.
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| Serratus Anterior N | Long thoracic n. (C6, C7).
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| Serratus Anterior A | Abducts and upwardly rotates scapula; stabilizes the medial border of the scapula against thoracic wall.
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| Diaphragm PA | Upper lumbar vertebrae, lower 6 ribs and costal cartilages, xiphoid process.
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| Diaphragm DA | Central tendon of diaphragm.
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| Diaphragm N | Phrenic n. (C3, C4, C5)
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| Diaphragm A | Flattens central tendon, increasing vertical diameter of thoracic cavity in inspiration.
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| Coracobrachialis PA | Tip of coracoid process of scapula.
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| Coracobrachialis DA | Middle 1/3 of medial surface of the humerus.
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| Coracobrachialis A | Shoulder flexion and adduction.
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| Coracobrachialis N | Musculocutaneous (C5,C6,C7).
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| Brachialis PA | Distal ½ of anterior surface of humerus.
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| Brachialis DA | Coronoid process and ulnar tuberosity.
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| Brachialis A | Elbow flexion.
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| Brachialis N | Musculocutaneous (C5, C6) and radial (C5, C7).
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| Anconeus PA | Lateral epicondyle of humerus.
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| Anconeus DA | Lateral surface of olecranon and superior part of posterior surface of ulna.
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| Anconeus A | Elbow extension, stabilizes elbow joint.
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| Anconeus N | Radial (C7, C8, T1).
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| Biceps Brachii O | short head - coracoid process, long head - supraglenoid tubercle of the scapula
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| Biceps Brachii I | Radial tuberosity (and fascia of the forearm via bicipital aponeurosis).
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| Biceps Brachii N | Musculocutaneous (C5, C6)
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| Biceps Brachii A | Forearm supination, elbow flexion, shoulder flexion.
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| Triceps Brachii O | Long head: infraglenoid tubercle. Lateral head: posterior surface of the humerus superior to spiral (radial) groove. Medial head: posterior surface of the humerus inferior to spiral (radial) groove.
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| Triceps Brachii I | Olecranon process.
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| Triceps Brachii N | Radial (C7).
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| Triceps Brachii A | elbow extension
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| Deltoids O | Ant: lateral 1/3 of clavicle; Mid: Acromion; Post: spine of scapula
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| Deltoids I | deltoid tuberosity of humerus
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| Deltoids N | Axillary n. C5
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| Deltoids A | Ant: flexes humerus; Mid: abducts humerus; Post: extends humerus
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Created by:
txst fall 2009
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