Craniolateral Antebrachial Muscles

Question 0

common digital extensor

Answer 0

O: lateral epicondyle of humerus
I: extensor processes of distal phalanges
A: extend carpal and digital joints

Question 1

extensor carpi radialis

Answer 1

O: lateral epicondyle of humerus and its crest
I: dorsoproximal end of metacarpal bones 2 and 3
A: minimally flex cubital joint; extend carpal joints

Question 2

lateral digital extensor

Answer 2

O: lateral epicondyle of humerus
I: distal phalanges (also proximal and/or middle phalanges - variable) of lateral digits
A: extend carpal and digital joints

Question 3

ulnaris lateralis

Answer 3

O: lateral epicondyle of humerus
I: accessory carpal bone and proximolateral aspect of fifth metacarpal bone
A: flex carpal joints

Question 4

abductor pollicis longus (extensor carpi obliquus)

Answer 4

O: body of ulna
I: proximal metacarpal 1
A: extend carpal joints; abduct first digit (carnivores)

Question 5

supinator

Answer 5

O: lateral epicondyle of humerus
I: body of radius
A: supination of manus

Question 6

brachioradialis

Answer 6

O: lateral epicondyle of humerus
I: fascia near carpus
A: flex cubital joint and supinate manus