Forearm And Wrist

Question 1

Biceps branchii

Answer 1

Actions - flexes elbow and supinates forearm, flexes shoulder
Origins- long head- supraglenoid tubercle of scapula
Short head - coracoid process of scapula
Insertion- tuberosity of radius

Question 2

Triceps branchii

Answer 2

Actions- All heads- extends elbow
Long head- extends and addicts shoulder
Origins- long head- infraglenoid tubercle of scapula
Lateral head- upper half of posterior surface of humerus
Medial head- distal 2 thirds of posterior surface of the humerus.