Arm Muscles

Biceps Brachii

O: SH: coracoid process of scapula
LH: supraglenoid tubercle
Ins: Radial Tuberosity and bicepital aponeurosis
Inn: Musculocutaneous
Action: Elbow Flexion

Brachialis

O: Ant Dist Surface of humerus
Insertion: Ulnar Tuberosity of Coronoid Process
Inn: Musculocutaneous
Act: Elbow Felxion

Brachioradialis

O: Lat Supracondylar Ridge of Humerus
Insertion:Styloid Process of Radius
Inn: Radial
Action: Elbow Flexion,Radial

Triceps Brachii

O: LH: Infraglenoid Tubercle
SH: Sup Lat surface of humerus
MH: Post Dist Surface of Humerus
Ins: Olecranon Process of Ulna
Inn: Radial
Act: Elbow Ext

Anconeus

O: Lat epicondyle of Humerus
Ins: Lat surface of Olecranon process
Inn: Radial
Act: Stabilization

Radio ulnar Joints

3: Proximal - synovial- pivot
Middle Fibrous Interosseus Membrane
Distal Synovial Pivot

Supinator

O:Lat epicondyle of Humerus and Ulna
Ins: Anterolateral surface of Radius
Inn: Deep Radial
Act: Sup

Pronator Teres

O: Med Epicondyle of humerus and coronoid process process
Ins: Dist Lat Surface of Radius
Inn: Med

Pronator Quadratus

O: Med Surface of distal Ulna
Ins: Anterolateral Surface of Distal Radius
Inn: Median

Annular Ligament

Attached radius to Ulna