Muscles of the upper limb

Question 1

Biceps Brachii

Answer 1

Origin - Long head; scapula above glenoid activity
Short head; coracoid process
Insertion - Radial tuberosity
Action - Elbow flexion, supernates forearm

Question 2

Triceps Brachii

Answer 2

Origin - Longhead; Scapula below glenoid cavity
Lateral and medial heads ; posterior surface of humerus
Insertion - Olecranon
Action - Elbow extension

Question 3

Flexor digitorum superficialis muscle

Answer 3

Origin - medial epicondyle and proximal portion of ulna and radius
Insertion - Anterior surface of phalanges
Action - Wrist flexion

Question 4

Extensor digitorum

Answer 4

Origin - Lateral epicondyle
Insertion - Posterior surface of phalanges
Action - Wrist extension