Dermatomes of Upper Limb

Question 1

C3, C4

Answer 1

region at base of neck, extending laterally over shoulder

Question 2

C5

Answer 2

lateral aspect of arm (superior aspect of abducted arm)

Question 3

C6

Answer 3

lateral forearm and thumb

Question 4

C7

Answer 4

middle and ring fingers (middle 3 fingers) and center of posterior aspect of forearm

Question 5

C8

Answer 5

little finger, medial side of hand and forearm (inferior aspect of abducted arm)

Question 6

T1

Answer 6

medial aspect of forearm and inferior arm

Question 7

T2

Answer 7

medial aspect of superior arm and skin of axilla