Forearm O/I

Question 1

Flexor carpi ulnaris

Answer 1

Origin: Medial epicondyle of humerus via common flexor tendon
Medial border olecranon
Upper 2/3 posterior border ulna via aponeurosis

Insertion: Pisiform; then via ligaments to hook of hamate and 5th metacarpal

Question 2

Flexor carpi radialis

Answer 2

Origin: Medial epicondyle humerus via flexor tendon

Insertion: Palmar surface bases of 2nd and 3rd metacarpals

Question 3

Palmaris longus

Answer 3

Origin: Medial epicondyle

Insertion: Medial side of base 5th metacarpal

Question 4

Extensor carpi ulnaris

Answer 4

Origin: Lateral epicondyle of humerus via common extensor tendon

Insertion: Medial side of base of 5th metacarpal

Question 5

Extensor carpi radialis longus

Answer 5

Origin: Lower 1/3 lateral supracondylar ridge of humerus
Adjacent intermuscular septum

Insertion: Posterior surface base 2nd metacarpal

Question 6

Extensor carpi radialis brevis

Answer 6

Origin: Lateral epicondyle humerus via common extensor tendon

Insertion: Posterior surface base of 3rd metacarpal