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Muscle test B 137
| Term | Definition |
|---|---|
| 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 |