Dermatomes and Myotomes

Question 1

Where is the C5 dermatome located?

Answer 1

Arm over lateral deltoid region

Question 2

Where is the CB dermatome located?

Answer 2

Dorsal web of the hand (near thumb)

Question 3

Where is the C7 dermatome located?

Answer 3

Palmar surface of the middle finger

Question 4

Where is the C8 Dermatome located?

Answer 4

Little finger, medial side of hand and forearm

Question 5

Where is the T1 dermatome located?

Answer 5

Medial arm and axilla

Question 6

Where is C5/C6 Axillary nerve myotome?

Answer 6

Deltoid

Shoulder abduction

Question 7

Where is the C5/C6 Musculocutaneous nerve myotome?

Answer 7

Biceps Brachii

elbow flexion/wrist extension

Question 8

Where is the C6/C7 Radial nerve myotome?

Answer 8

Wrist Extensors

elbow extension/wrist flexion/finger extension

Question 9

Where is the c6/C7/C8 radial nerve myotome?

Answer 9

Triceps Brachii

Question 10

Where is C8, median and ulnar nerve, myotome?

Answer 10

Finger flexors (figure 8)

finger flexion

Question 11

Where is T1, deep branch of ulnar nerve, myotome?

Answer 11

Finger ABductors
Fingers ADDuctors