Kinesiology-Origins, Insertions, Actions Of Muscles Of Elbow And Radioulnar Joints

Front 1

Biceps Brachii-Long and Short heads

Back 1

~Major Actions-Elbow Flexor
~Other Actions-Supinates forearm (flexes when supinated)
~O-SH-Tip of coracoid process of scapula
-LH-supraglenoid tubercle of scapula
~I-radial tuberosity and fascia of forearm

Front 2

Brachialis

Back 2

~Major Action-Elbow Flexion-especially when pronated
~O-Distal half of anterior surface of hunerus
~I-Coronoid process and tuberosity of ulna

Front 3

Brachioradialis

Back 3

~Major Action-Elbow Flexion (when neutral)
~Other actions-supinates forearm
~O-Proximal 2/3 of lateral supracondylar ridge of humerus
~I-Lateral surface of distal end of radius

Front 4

Triceps Brachii

Back 4

~Major Actions-Chief Forearm Extension
~O-Long Head-Infraglenoid tubercle of scapula
-Lateral and Medial heads-Post. surface of humerus
~I-Proximal end of olecranon process of ulna

Front 5

Anconeus

Back 5

~Major Action-Forearm Extenison and stabilization
~O-Lateral epicondyle of humerus
~I-Lateral surface of olecranon nad superior part of posterior surface of ulna

Front 6

Supinator

Back 6

~Major Action-Supinates forearm
~O-Lateral epicondyle of humerus
~I-Lateral, posterior and anterior 1/3 proximal surface of radius

Front 7

Supinators

Back 7

~Bieps Brachii
~Brachioradialis
~Supinator

Front 8

Pronator Teres

Back 8

~Major action-Pronates forearm
~Other actions-Assists flexion
~O-Medial epicondyle of humerus and coronoid process of ulna
~Insertion-middle of lateral surface of radius

Front 9

Pronator Quadratus

Back 9

~Major Action-Pronates forearm-binds radius and ulna together
~O-Distal 1/4 of anterior surface of ulna
~I-Distal 1/4 of anterior surface of radius