Dermatomes of the Upper Limb

Question 1

C5 dermatome

Answer 1

deltoid tuberosity

lateral aspect of the arm (superior aspect of abducted arm)

Question 2

C6 dermatome

Answer 2

(thumb)

lateral forearm and thumb

Question 3

C7 dermatome

Answer 3

index finger

Question 4

C8 dermatome

Answer 4

5th digit

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

Question 5

T1 dermatome

Answer 5

medial aspect of forearm and inferior arm

Question 6

T2 dermatome

Answer 6

medial aspect of superior arm and skin of axilla (ex: radiating pain in a heart attack)