Cutaneous nerves of Upper Limb

Question 0

Lateral arm (dermatome)

Answer 0

C5

Question 1

Region at base of neck (Dermatome)

Answer 1

C3 & C4

Question 2

Lateral forearm and thumb (dermatome)

Answer 2

C6

Question 3

Middle and ring fingers (dermatome)

Answer 3

C7

Question 4

Little finger and medial side of hand and forearm (dermatome)

Answer 4

C8

Question 5

Middle of forearm to axilla (Dermatome)

Answer 5

T1

Question 6

Small part of arm and skin of axilla (Dermatome)

Answer 6

T2

Question 7

Supraclavicular

Answer 7

C3 & C4

Question 8

Posterior cutaneous nerve of arm

Answer 8

C5-C8 - branch of radial nerve

Supplies skin on posterior surface of arm

Question 9

Posterior cutaneous nerve of forearm

Answer 9

C5 - C8 - branch of radial

Supplies skin on posterior surface of forearm

Question 10

Superior lateral cutaneous nerve of arm

Answer 10

C5, C6 - terminal branch of axillary nerve
Emerges from beneath the posterior margin of the deltoid
Supplies skin over lower part of deltoid and on lateral side of midarm

Question 11

Inferior lateral cutaneous nerve

Answer 11

C5, C6 - branch of radial
Supplies skin over inferolateral aspect of arm
Can be branch of posterior cutaneous nerve of forearm

Question 12

Lateral cutaneous nerve of forearm

Answer 12

C6, C7
Terminal branch of musculocutaneous nerve
Supplies skin on lateral side of forearm

Question 13

Medial cutaneous nerve of arm

Answer 13

C8 - T2
From medial cord of brachial plexus
Unites in axilla with lateral cutaneous branch of 2nd intercostal nerve
Supplies skin on medial side of arm

Question 14

Intercostobrachial

Answer 14

T2
Lateral cutaneous branch of 2nd intercostal nerve
Innervates skin on medial surface of the arm

Question 15

Medial cutaneous nerve of forearm

Answer 15

C8, T1
From medial cord of brachial plexus
Supplies skin on anterior and medial surfaces of forearm