Arm Muscles Flashcards
BICEPS BRACHII
ORIGIN
Short head: Coracoid process Long head: Tubercle above glenoid cavity on the humerus
INSERTION
Radial tuberosity of the radius
ISOLATED FUNCTION
Concentric Action
Elbow flexion, supination of the radioulnar joint, and shoulder flexion
INTEGRATED FUNCTION
Eccentric Action
Elbow extension, pronation of the radioulnar joint, and shoulder extension
Isometric Action
Stabilizes the elbow and shoulder girdle
INNERVATION
Musculocutaneous nerve
TRICEPS BRACHII
ORIGIN
Long head: Infraglenoid tubercle of the scapula Short head: Posterior humerus Medial head: Posterior humerus
INSERTION
Olecranon process of the ulna
ISOLATED FUNCTION
Concentric Action
Elbow extension and shoulder extension
INTEGRATED FUNCTION
Eccentric Action
Elbow flexion and shoulder flexion
Isometric Action
Stabilizes the elbow and shoulder girdle
INNERVATION
Radial nerve
BRACHIALIS
ORIGIN
Humerus
INSERTION
Coronoid process of the ulna
ISOLATED FUNCTION
Concentric Action
Flexes elbow
INTEGRATED FUNCTION
Eccentric Action
Elbow extension
Isometric Action
Stabilizes the elbow
INNERVATION
Musculocutaneous and radial nerve
ANCONEUS
ORIGIN
Lateral epicondyle of humerus
INSERTION
Olecranon process and posterior ulna
ISOLATED FUNCTION
Concentric Action
Extends elbow
INTEGRATED FUNCTION
Eccentric Action
Elbow flexion
Isometric Action
Stabilizes the elbow
INNERVATION
Radial nerve
BRACHIORADIALIS
ORIGIN
Lateral supracondylar ridge of humerus
INSERTION
Styloid process of radius
ISOLATED FUNCTION
Concentric Action
Flexes elbow
INTEGRATED FUNCTION
Eccentric Action
Elbow extension
Isometric Action
Stabilizes the elbow
INNERVATION
Radial nerve
PRONATOR QUADRATUS
ORIGIN
Distal ulna
INSERTION
Distal radius
ISOLATED FUNCTION
Concentric Action
Pronates forearm
INTEGRATED FUNCTION
Eccentric Action
Forearm supination
Isometric Action
Stabilizes distal radioulnar joint
INNERVATION
Anterior interosseous nerve
PRONATOR TERES
ORIGIN
Medial epicondyle of humerus and coronoid process of ulna
INSERTION
Radius
ISOLATED FUNCTION
Concentric Action
Pronates forearm
INTEGRATED FUNCTION
Eccentric Action
Forearm supination
Isometric Action
Stabilizes proximal radioulnar joint and elbow
INNERVATION
Median nerve
SUPINATOR
ORIGIN
Lateral epicondyle of humerus
INSERTION
Radius
ISOLATED FUNCTION
Concentric Action
Supinates forearm
INTEGRATED FUNCTION
Eccentric Action
Forearm pronation
Isometric Action
Stabilizes proximal radioulnar joint and elbow
INNERVATION
Radial nerve
