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Muscle test B 137

Pectoralis Major Action Flexes, adducts, and rotates humerus
Pectoralis Major Nerve Supply Pectoral Nerve
Pectoralis Major Origin Clavicle, sternum, and costal cartilages of upper ribs
Pectoralis Major Insertion Intertubercular groove of humerus
Latissimus Dorsi Origin spines of sacral, lumbar, lower thoracic vertebrae,iliac crest, and lower ribs
Latissimus Dorsi Insertion Intertubercular groove of humerus
Latissimus Dorsi Action Extends, adducts the arm, rotates humerus inwardly, or pulls shoulder downward and back
Latissimus Dorsi Nerve Supply Thoracodorsal Nerve
Deltoid Origin Acromion process, spine of scapula, and clavicle
Deltoid Insertion Deltoid tuberosity of humerus
Deltoid Action Abducts upper arm, extends humerus, or flexes humerus
Deltoid Nerve Supply Axillary Nerve
Trapezius Nerve Supply Accessory nerve
Trapezius Action Rotates scapula
Trapezius Origin Occipital bone, spines of cervical and thoracic
Trapezius Insertion Clavicle, spine, and acromion process of scapula
Levator scapulae Origin Transverse process of cervical vertebrae
Levator scapulae Insertion Medial margin of scapula
Levator scapulae Action Elevates scapula
Levator scapulae Nerve supply Dorsal scapular, C3-C5 nerves
Teres Minor Origin Lateral border of scapula
Teres Minor Insertion Greater tubercle of humerus
Teres Minor Action Rotates arm laterally
Teres Minor Nerve Supply Axillary nerve
Extensor Carpi Radialis Longus Origin Distal end of humerus
Extensor Carpi Radialis Longus Insertion Base of second metacarpal
Extensor Carpi Radialis Longus Action Extends wrist and abducts hand
Extensor Carpi Radialis Longus Nerve Supply Radial Nerve
Serratus Anterior Origin Outer surface of upper ribs
Serratus Anterior Insertion Ventral surface of scapula
Serratus Anterior Nerve Supply Long thoracic nerve
Serratus Anterior Action Pulls scapula anterior and downward
Brachioradialis Origin Distal lateral end of humerus
Brachioradialis Insertion Lateral surface of radius above styloid process
Brachioradialis Action Flexes arm at elbow
Brachioradialis Nerve supply Radial Nerve
Pectoralis Minor Origin Sternal ends of upper ribs
Pectoralis Minor Insertion Coracoid process of scapula
Pectoralis Minor Action Pulls scapula forward, downward, or raises ribs
Pectoralis Minor Nerve Supply Pectoral Nerve
Infraspinatus Origin Posterior surface of scapula
Infraspinatus Insertion Greater tubercle of humerus
Infraspinatus Action Rotates arm laterally
Infraspinatus Nerve Supply Suprascapular nerve
Biceps Brachii Origin Coracoid process and tubercle above glenoid cavity of scapula
Biceps Brachii Insertion Radial tuberosity of radius
Biceps Brachii Action Flexes arm at elbow and rotates hand laterally
Biceps Brachii Nerve Supply Musculocutaneous nerve
Triceps Brachii Origin Tubercle below glenoid cavity, lateral and medial surfaces of humerus
Triceps Brachii Insertion Olecranon process of ulna
Triceps Brachii Action Extends arm at elbow
Triceps Brachii Nerve Supply Radial nerve
Supinator Origin Lateral epicondyle of humerus and crest of ulna
Supinator Insertion Lateral surface of radius
Supinator Action Rotates forearm laterally
Supinator Nerve Supply Radial Nerve
Pronator teres Origin Medial epicondyle of humerus and coronoid process of ulna
Pronator teres Insertion Lateral surface of radius
Pronator teres Action Rotates arm medially
Pronator teres Nerve Supply Median Nerve
Extensor digitorum Origin Lateral epicondyle of humerus
Extensor digitorum Insertion Posterior surface of phalanges in fingers 2-5
Extensor digitorum Action Extends fingers
Extensor digitorum Nerve Supply Radial Nerve
Flexor digitorum profundus Origin Anterior surface of ulna
Flexor digitorum profundus Insertion Bases of distal phalanges in fingers 2-5
Flexor digitorum profundus Action Flexes distal joint of fingers
Flexor digitorum profundus Nerve Supply Median and ulnar nerves
Flexor carpi radialis Origin Medial epicondyle of humerus
Flexor carpi radialis Insertion Base of second and third metacarpals
Flexor carpi radialis Action Flexes and abducts wrist
Flexor carpi radialis Nerve Supply Median Nerve
Subscapularis Origin Anterior surface of scapula
Subscapularis Insertion Lesser tubercle of humerus
Subscapularis Action Rotates arm medially
Subscapularis Nerve supply Subscapular Nerve
Created by: 1129373603933710
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