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Anatomy UE

Muscles (Upper trap - Diaphragm+ Coracobrachialis - Delts

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