MUSCLES OF THE WRIST JOINT

Question 1

FLEXOR CARPI RADIALIS: O,I

Answer 1

O: medial epicondyle of the humerus via the CFT

I: anterior side of the base of the 2nd and 3rd MC

Question 2

FLEXOR CARPI RADIALIS: A,N

Answer 2

A: flexes and radially deviates the hand at the wrist joint

N: median n.

Question 3

PALMARIS LONGUS: O,I

Answer 3

O: medial epicondyle of the humerus via the CFT

I: palmar aponeurosis and flexor retinaculum

Question 4

PALMARIS LONGUS: A,N

Answer 4

A: flexes the hand at the wrist joint and wrinkle skin of the palm

N: median n.

Question 5

FLEXOR CARPI ULNARIS: O,I

Answer 5

O: medial epicondyle of the humerus via CFT and the post. proximal 2/3 of the ulna

I: pisiform, hook of hamate, and base of 5th MC

Question 6

FLEXOR CARPI ULNARIS: A,N

Answer 6

A: flexes and ulnar deviates the hand at the wrist joint

N: ulnar n.

Question 7

EXTENSOR CARPI RADIALIS LONGUS: O,I

Answer 7

O: distal 1/3 of the lateral supracondylar ridge of the humerus

I: posterior side of the base of the second MC

Question 8

EXTENSOR CARPI RADIALIS LONGUS: A,N

Answer 8

A: extends and radially deviates the hand at the wrist joint

N: radial n.

Question 9

EXTENSOR CARPI RADIALIS BREVIS: O,I

Answer 9

O: lateral epicondyle of the humerus via the CET

I: posterior side of the base of the 3rd MC

Question 10

EXTENSOR CARPI RADIALIS BREVIS: A,N

Answer 10

A: extends and radially deviates the hand at the wrist joint

N: radial n.

Question 11

EXTENSOR CARPI ULNARIS: O,I

Answer 11

O: lateral epicondyle of the humerus via the CET and the posterior middle 1/3 of the ulna

I: posterior side of the base of the 5th MC

Question 12

EXTENSOR CARPI ULNARIS: A,N

Answer 12

A: extends and ulnar deviates the hand at the wrist joint

N: radial n.