Myotomes

Question 1

Weakness of shoulder abduction and elbow flexion is which nerve root?

Answer 1

C5

Question 2

Weakness of finger flexion (FDP, median/ulnar) is which nerve root?

Answer 2

C8

Question 3

Weakness of elbow extension, wrist flexion (FCU and FCR i.e. median/ulnar), and finger extension = which nerve root?

Answer 3

C7

Question 4

Weakness of elbow flexion and wrist extension = which nerve root?

Answer 4

C6

Question 5

Weakness of finger abduction = which nerve root?

Answer 5

T1

Question 6

Weakness of thumb abduction and wrist flexion?

Answer 6

Median nerve

Question 7

Weakness of elbow flexion, elbow extension, wrist extension, finger flexion, and thumb extension?

Answer 7

Radial nerve

Question 8

Weakness of finger abduction and finger flexion?

Answer 8

Ulnar nerve

Question 9

Triceps reflex is which nerve root?

Answer 9

C7/C8 (lay them straight) - radial nerve

Question 10

Biceps reflex and brachioradialis reflex (supinator) are which two nerve roots?

Answer 10

C5 and C6 - radial nerve