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Stack #39430
Upper Body Muscles
| Muscle | Actions | Lever | Advantages |
|---|---|---|---|
| rhomboids | retraction, depression, downward rotation | type I | mechanical advantage, high force potential |
| levator scapulae | scapula: elevation, downward rotation, abduction, retraction spine: lateral flexion, rotation | Type III | high force, low ROM, mechanical advantage |
| upper trapezius | neck: extension, lateral flexion, rotation scapula: elevation | Type I | mechanical advantage, low force, low velocity |
| middle trapezius | retraction, elevation, upward rotation | Type III | low velocity, good force, mechanical advantage |
| lower trapezius | upward rotation, adduction, depression | Type I | mechanical advantage, high force, high velocity |
| serratus anterior | abduction, upward rotation, depression | Type III | high force, ROM, moderate velocity |
| latissimus dorsi | adduction, internal and external rotation, extension, horizontal abduction | Type III | high force and velocity, hybrid ROM and mechanical advantage |
| anterior deltoid | abduction, flexion, internal rotation and horizontal adduction | (blank) | (blank) |
| biceps brachi | elbow and shoulder flexion, supination, weak horizontal adduction | Type III | high force and velocity, mechanical advantage |
| brachialis | flexion | Type III | ROM, low force, low velocity |
| supraspinatus | abduction and stabilization | Type I | low force, low velocity, ROM |
| infraspinatus | external rotation and horizontal abduction | (blank) | (blank) |
| subscapularis | internal rotation and stabilization | Type III | high force, low velocity, hybrid |
| teres minor | external rotation and horizontal abduction | (blank) | (blank) |
| teres major | internal rotation, extension and adduction | (blank) | (blank) |
| pectoralis major | horizontal flexion, horizontal adduction, internal rotation, adduction, flexion, abduction scapula: downward rotation, depression, and initial protraction | Type III | high force, moderate velocity, mechanical advantage |
| pectoralis minor | abduction, downward rotation, depression | (blank) | (blank) |
| triceps brachii | shoulder extension, adduction, elbow flexion, supinator | Type I | ROM, high velocity, high force |
| brachioradialis | flexion, supination and pronation initiator | Type II | ROM, low velocity and force |
| pronator teres, pronator quadratus, and flexor carpi radialis | internal rotation | (blank) | (blank) |
| sternocleidomastoid | flexion, rotation, lateral flexion, extension | (blank) | (blank) |
| lateral deltoid | abduction, flexion, transverse abduction | (blank) | (blank) |
| posterior deltoid | external rotation, extension, transverse | (blank) | (blank) |
| supinator and biceps brachii | external rotation | (blank) | (blank) |
| flexor carpi radialis, flexor carpi ulnaris, palmaris longus, flexor pollicus longus, flexor digitorum profundus and superficialis | wrist flexors | (blank) | (blank) |
| extensor digitorum, carpi radialis longus and brevis, carpi ulnaris, indicis, digiti minimi, pollicus longus and brevis | wrist extensors | (blank) | (blank) |
| penis | erection | (blank) | (blank) |