Posterior Forearm

Question 1

What is the action of brachioradialis?

Answer 1

Flexes at the elbow

Question 2

What is the action of extensor carpi radialis longus and brevis?

Answer 2

Extends and abducts the wrist

Question 3

What is the action of extensor digitorum?

Answer 3

Extends medial four fingers at the MCP and IP joints.

Question 4

What is the action of extensor digiti minimi?

Answer 4

Extends the little finger, and contributes to extension at the wrist

Question 5

What is the action of extensor carpi ulnaris?

Answer 5

Extension and adduction of wrist

Question 6

What is the action of the supinator?

Answer 6

Supinates the forearm

Question 7

What is the action of abductor pollicis longus?

Answer 7

Abducts the thumb

Question 8

What is the action of extensor pollicis brevis?

Answer 8

Extends at the metacarpophalangeal and carpometacarpal joints of the thumb

Question 9

What is the action of extensor policies longus?

Answer 9

Extends all joints of the thumb: carpometacarpal, metacarpophalangeal and interphalangeal

Question 10

What is the action of extensor indicus proprius?

Answer 10

Extends the index finger