Posterior forearm - Superficial layer

Question 1

brachioradialis origin

Answer 1

lateral supra-epicondylar ridge of the humerus

Question 2

brachioradialis insertion

Answer 2

lateral distal end of radius

Question 3

brachioradialis nerve and bs

Answer 3

radial nerve and radial recurrent artery

Question 4

brachioradialis action

Answer 4

flexion at elbow when forearm in midpronated position

Question 5

extensor carpi radialis longus origin

Answer 5

lateral supra-epicondylar ridge of the humerus

Question 6

extensor carpi radialis longus insertion

Answer 6

base of 2nd metacarpal

Question 7

extensor carpi radialis longus nerve and bs

Answer 7

radial

Question 8

extensor carpi radialis longus action

Answer 8

• extension and abduction of hand

- extension of carpometacarpal joints

Question 9

extensor carpi radialis brevis origin

Answer 9

lateral epicondyle of humerus

Question 10

extensor carpi radialis brevis insertion

Answer 10

base of 3rd metacarpal

Question 11

extensor carpi radialis brevis nerve and bs

Answer 11

deep branch of radial nerve

radial artery

Question 12

extensor carpi radialis brevis action

Answer 12

• extension of hand
• abduction of hand
• extension at carpometacarpal joint

Question 13

extensor digitorum origin

Answer 13

lateral epicondyle of humerus

Question 14

extensor digitorum insertion

Answer 14

extensor expansion of digits 2-5

Question 15

extensor digitorum nerve and bs

Answer 15

posterior interosseous

Question 16

extensor digitorum action

Answer 16

• extension of hand

- extension at interphalangeal and metacarpophalangeal joints

Question 17

extensor digiti minimi origin

Answer 17

lateral epicondyle of humerus

Question 18

extensor digiti minimi insertion

Answer 18

extensor expansion of 5th digit

Question 19

extensor digiti mini nerve and blood supply

Answer 19

posterior interosseous

Question 20

extensor digiti mini action

Answer 20

• extension of hand

- extension at interphalangeal and metacarpophalangeal joint of 5th digit

Question 21

extensor carpi ulnaris blood supply

Answer 21

ulnar artery

Question 22

extensor carpi ulnaris nerve

Answer 22

posterior interosseous

Question 23

extensor carpi ulnaris insertion

Answer 23

base of 5th metacarpal

Question 24

extensor carpi ulnaris origin

Answer 24

• lateral epicondyle

- posterior border of ulna

Question 25

extensor carpi ulnaris action

Answer 25

• extension of hand
• adduction of hand
• extension of carpometacarpal joint