Muscles of the Wrist Complex

Question 1

What are the attachments of Flexor Carpi Ulnaris?

Answer 1

O: humeral head – medial epicondyle, ulnar head – medial border of olecranon & upper 2/3rds of posrterior border of ulna

I: pisiform – extends to hook of hamate and base of 5th metacarpal

Question 2

What are the attachments of Flexor Carpi Radialis?

Answer 2

O: medial epicondyle of humerus

I: palmar surfaces of the bases of the 2nd and 3rd metacarpals

Question 3

What are the attachments of Palmaris Longus?

Answer 3

O: medial epicondyle of humerus

I: superficial flexor retinaculum

Question 4

What is the shape and DOF for Flexor Carpi Ulnaris?

Answer 4

Superficial and Inferior

Question 5

What is the shape and DOF for Flexor Carpi Radialis?

Answer 5

Oblique and Fusiform

Question 6

What is the shape and DOF for Palmaris Longus?

Answer 6

Small and vesitigal

inferolaterally

Question 7

What is the nerve supply for Flexor Carpi Ulnaris?

Answer 7

Ulnar nerve C7 C8

Question 8

What is the nerve supply for Flexor Carpi Radialis

Answer 8

Median nerve C6 C7

Question 9

What is the nerve supply for Palmaris Longus

Answer 9

Median Nerve C8

Question 10

What is the action of Flexor Carpi Ulnaris

Answer 10

Wrist flexion and ulnar deviation

Question 11

What is the action of Flexor Carpi Radialis

Answer 11

Flexes the wrist, radial deviation, aid pronation, help flex the elbow

Question 12

What is the action of Palmaris Longus

Answer 12

Weak wrist flexion

Question 13

What is the function of Flexor carpi ulnaris?

Answer 13

writing

Question 14

What is the function of Flexor carpi radialis?

Answer 14

undoing buttons

Question 15

What is the functions of palmaris longs

Answer 15

undoing buttons

Question 16

What are the attachments of extensor carpi radialis longus?

Answer 16

O: lower 1/3rd lateral supracondylar line of humerus and adjacent intramuscular septum

I: posterior surface of base of 2nd metacarpal

Question 17

what is the shape and DOF of extensor carpi radialis longus?

Answer 17

strap muscle

inferiorly

Question 18

what is the nerve supply of extensor carpi radialis longus?

Answer 18

radial nerve C6, C7

Question 19

what is the action of extensor carpi radialis longus?

Answer 19

extends and radial deviates wrist

Question 20

what is the function of extensor carpi radialis longus?

Answer 20

picking up a cup

Question 21

what are the attachments of extensor carpi radialis brevis?

Answer 21

O: lateral epicondyle of humerus via common extensor tendon

I: posterior surface of base of 3rd metacarpal

Question 22

what is the shape and DOF of extensor carpi radialis brevis?

Answer 22

strap muscle

inferiorly

Question 23

what is the nerve supply of extensor carpi radialis brevis?

Answer 23

posterior interosseous branch of radial nerve C6 C7

Question 24

what is the action of extensor carpi radialis brevis?

Answer 24

extends and radial deviates wrist

Question 25

what is the function of extensor carpi radialis brevis?

Answer 25

picking up a cup

Question 26

what are the attachments of extensor carpi ulnaris

Answer 26

O: lateral epicondyle of humerus via common extensor tendon I: medial side of base of 5th metacarpal

Question 27

what is the nerve supply of the extensor carpi ulnaris

Answer 27

Deep branch of the radial nerve (C7, C8)

Question 28

what is the action of extensor carpi ulnrias?

Answer 28

extension and ulnar deviation

Question 29

what is the shape and DOF of extensor carpi ulnaris?

Answer 29

inferomedially

Question 30

what is the function of extensor carpi ulnaris

Answer 30

putting a cup down