Wrist Muscles

Question 1

Flexor carpi radialis

Answer 1

• Origin- medial epicondyle of the humerus
• Insertion- base of 2nd and 3rd metacarpal
• Action- wrist flexion and radial deviation

Question 2

Flexor carpi ulnaris

Answer 2

Origin: medial epicondyle of the humerus and olecranon of ulna.

• Insertion: pisiform, hook of hamate, base of 5th metacarpal.

-action: wrist flexion and ulnar deviation.

Question 3

Palmaris longus

Answer 3

-Origin: medial epicondyle of humerus.

• insertion: palmar aponeurosis and flexor retinaculum.

-Action: assists wrist flexion

Question 4

Extensor carpi radialis longus

Answer 4

-Origin: lateral supracondylar ridge of humerus

-insertion: base of 2nd metacarpal

-action: wrist extension and radial deviation

Question 5

Extensor carpi radialis brevis

Answer 5

-Origin: lateral epicondyle of humerus

-insertion: base of 3rd metacarpal

-action: wrist extension and radial deviation

Question 6

Extensor carpi ulnaris

Answer 6

-Origin: lateral epicondyle of humerus and posterior border or ulnar

-insertion: base of 5th metacarpal

-action: wrist extension and ulnar deviation

Question 7

Wrist flexors

Answer 7

Anterior forearm

Question 8

Wrist extensors

Answer 8

Posterior forearm