Forearm (Extensor)

Question 1

Nerve to all posterior forearm muscles

Answer 1

Radial

Question 2

Posterior forearm muscles do

Answer 2

Extension and supination

Question 3

Which is the only flexor in the posterior forearm compartment

Answer 3

Brachioradialis (anterior arm, but in posterior compartment as fascia of post goes reasonably anteiror)

Question 4

Superficial Extensor Forearm

Answer 4

Brachioradialis
Anconeus
Extensor Carpi Radialis Longus
Extensor Carpi Radialis Brevis
Extensor Digitorum
Extensor Digiti Minimi
Extensor Carpi Ulnaris

Question 5

Deep Extesnor Forearm Muscles

Answer 5

Supinator
Abductor Pollicis Longus
Extensor Pollicis Brevis
Extensor Pollicis Longus
Extensor Indicis

Question 6

Anconeus Origin

Answer 6

Suprachondyle Ridge

Question 7

Extensor Carpi Radialis Longus Origin

Answer 7

Suprachondyle Ridge

Question 8

Extensor Carpi Radialis Brevis Origin

Answer 8

Common Extensor Tendon

Question 9

Extensor Carpi Ulnaris Origjn

Answer 9

Common Extensor Tendon

Question 10

Extensor digiti Minimi Origin

Answer 10

Common Extensor Tendon

Question 11

Extensor Digitorum Origin

Answer 11

Common Extensor Tendon

Question 12

ECRL Insertion

Answer 12

2nd Metacarpal

Question 13

ECRB Insertion

Answer 13

3rd Metacarpal

Question 14

ECU Insertion

Answer 14

5th Metacarpal

Question 15

EDM ED EI Insertion

Answer 15

DDEH

Question 16

Where does the radial nerve re-enter the extensor compartment

Answer 16

Between the two heads of supinator

Question 17

What causes wrist drop

Answer 17

Radial Nerve damage

Question 18

Why do you need the extensors when flexing for a power grip

Answer 18

You need the flexors to have optimal length to get maximal strength (Marie Ward)

Question 19

Anatomical Snuff Box Tendons

Answer 19

EPL EPB APL

Question 20

Clinical use of anatomical snuff box

Answer 20

Tendons of the snuff box attach to the scaphoid which is the most commonly damaged carpal

Question 21

Abductor Pollicis Longus Insertion

Answer 21

1st metacarpal

Question 22

Extensor Pollicis Brevis Insertion

Answer 22

Proximal Phalanx

Question 23

Extensor Pollicis Longus Insertion

Answer 23

Distal Phalanx

Question 24

Carpi Muscles that Abduct

Answer 24

FCR ECRB ECRL

Question 25

Carpi Muscles that Adduct

Answer 25

FCU ECU

Question 26

Radial Nerve goes Lateral between

Answer 26

Brachialis and Brachioradialis

Question 27

Radial Nerve Divides into ____ and ____ branches at _____

Answer 27

Deep - Supinator, ECRB
Superifical - cutaneous

Divides at Supinator (right after becoming posterior again)

Question 28

Deep Radial becomes _____

Answer 28

Posterior Interosseous Nerve, which supplies all other ‘Radial Nerve’ muscles