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Upper Muscles

QuestionAnswer
Anterior Deltoid O: lateral 1/3 of clavicle I: deltoid tuberosity A: shoulder abduction, flexion, medial rotation, horizontal abduction
Middle Deltoid O: acromion process I: deltoid tuberosity A: shoulder abdomen
Posterior Deltoid O: spine of scapula I: deltoid tuberosity A: shoulder abduction, extension, lateral rotation
Biceps Brachii O: long head- supraglenoid tubercle of scapula short head- coracoid process of scapula I: radial tuberosity of radius A: shoulder flexion, elbow flexion (supination)
Coracobrachilalis O: coracoid process of scapula I: medial surface of humerus near midpoint A: shoulder flexion and adduction
Pectoralis Major O: clavicular- medial 1/3 of clavicle sternal- sternum I: lateral lip of bicipital groove of humerus A: c- shoulder flexion, medial rotation, adduction, horizontal adduction S- medial rotation, adduction, horizontal adduction, shoulder flexion
Latissmus Dorsi O: spinous process of T7- L5, posterior surface of iliac crest and sacrum, lower 3 ribs I: bicipital groove A: shoulder extension, adduction, medial rotation
Teres Major O: inferior axillary border of scapula I: bicipital groove of humerus A: shoulder extension, adduction, and medial rotation
Triceps Brachii O: long head- infraglenoid tubercle of scapula lateral head- inferior greater tubercle on posterior humerus I: olecranon process of ulna A: shoulder extension
Supraspinatus O: supraspinatus fossa I: greater tubercle of humerus A: shoulder abduction
Infraspinatus O: infraspinatus fossa I: greater tubercle of humerus A: shoulder lateral rotation and horizontal abduction
Teres Minor O: axillary border of scapula I: greater tubercle of humerus A: shoulder lateral rotation, horizontal abduction
Subscapularis O: subscapular fossa I: lesser tubercle of humerus A: shoulder abduction, medial rotation
Upper Trapezius O: occipital protuberance, spinous processes C1-C6 I: lateral 1/3 of clavicle and acromion process A: scapular elevation and upward rotation, retraction
Middle Trapezius O: spinous process C7-T3 I: acromion process and spine of scapula A: scapular retraction, minimal upward rotation
Lower Trapezius O: spinous process of T4- T12 I: base of spine of scapula A: scapular depression, upward rotation, retraction
Levator Scapula O: transverse processes of C1-C5 I: superior angle and superior vertebral border A: scapular elevation, downward rotation
Rhomboid O: spinous processes C7-T5 I: vertebral border of scapula and inferior angle A: scapular retraction, elevation, downward rotation
Serratus Anterior O: lateral surface of 1-8 ribs I: anterior surface of vertebral border of scapula A: scapular protraction and upward rotation
Pectoralis Minor O: anterior surface of 3-5 ribs I: coracoid process of scapula A: scapular depression, protraction, downward rotation
Biceps Brachii O: long head- of supraglenoid tubercle of scapula short head- coracoid process of scapula I: radial tuberosity of radius A: shoulder flexion, elbow flexion, supination
Brachioradialis O: lateral supracondylar ridge I: distal lateral radius above styloid process A: elbow flexion, supination and pronation
Brachilalis O: anterior distal half of humerus I: ulnar tuberosity and coronoid process A: elbow flexion
Triceps Brachii O: long head- infraglenoid tubercle of scapula lateral head- inferior greater tubercle on posterior humerus medial head- posterior humerus I: olecranon process of ulna A: shoulder/elbow extension
Anconeus O: lateral epicondyle I: olecranon process A: elbow extension
Pronator Teres O: medial epicondyle and coronoid process I: lateral aspect of middle radius A: forearm pronation and elbow flexion
Pronator Quadratus O: anterior distal 1/4 of ulna I: anterior distal 1/4 of radius A: forearm pronation
Supinator O: lateral epicondyle and adjacent ulna I: anterior surface of proximal radius A: forearm supination, elbow flexion
Flexor Carpi Ulnaris O: medial epicondyle I: pisiform and base of 5th metacarpal A: wrist flexion and ulnar deviation
Flexor Carpi Radialis O: medial epicondyle I: base of 2nd and 3rd metacarpal A: wrist flexion and radial deviaton
Palmaris Longus O: medial epicondyle I: palmar aponeurosis A: wrist flexion
Extensor Carpi Radialis Longus O: lateral supracondylar ridge of humerus I: base of 2nd metacarpal A; wrist extension and radial deviation
Extensor Carpi Radialis Brevis O: lateral epicondyle I: base of 3rd metacarpal A: wrist extension
Extensor Carpi Ulnaris O: lateral epicondyle I: base of 5th metacarpal A: wrist extension and ulnar deviation
Flexor Digitorum Superficialis O: medial epicondyle, coronoid process and radius I: sides of middle phalanx of four fingers A: PIP and MCP flexion, wrist flexion
Flexor Digitorium Profundus O: coronoid process and proximal 3/4 of ulna I: distal phalanx of four fingers A: flexion of DIP, PIP, MCP, wrist flexion
Flexor Pollicis Longus O: anterior radius and interosseus membrane I: distal phalanx of thumb A: flexion of CMC, MCP, IP, joints of the thumb
Abductor Pollicis Longus O: posterior middle of radius, ulna, interosseus membrane I: base of thumb metacarpal A: abduction of CMC joint of thumb, extension of CMC and MCP joints
Extensor Pollicis Brevis O: posterior distal radius and interosseous membrane I: base of proximal phalanx of thumb A: extension of MCP and CMC joints of thumb
Extensor Pollicis Longus O; posterior middle portion of ulna and intersseous membrane I: base of distal phalanx of thumb A: extension of IP, MCP, CMC joints of thumb
Extensor Digitorum O: lateral epicondyle I: base of distal phalanx of 2nd and 5th finger A: extension of PIP, MCP, PIP joints of fingers, extends wrist
Extensor Indicis O: distal ulna and intersseous membrane I: base of distal phalanx of 2nd finger A: extension of PIP, MCP, DIP joints of 2nd finger
Extensor Digiti Minimi O: lateral epicondyle I: base of distal phalanx of little finger A: extension of PIP, MCP, DIP joints of little finger
Created by: user-2021040
 

 



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