Cutaneous Nerves of the Arm & Forearm

Question 0

Medial Cutaneous Nerve of the Forearm

Answer 0

C8 T1
Arises from the Medial Cord of the Brachial Plexus
Skin on the Anterior & Medial surface of the Forearm

Question 1

Intercostobrachial Nerve

Answer 1

T2
Lateral cutaneous branch of 2nd Intercostal Nerve
Skin on Medial surface of the Arm

Question 2

Inferior Lateral Cutaneous Nerve of the Arm

Answer 2

C5 C6
Branch of the Radial Nerve
Skin over the Inferolateral aspect of the Arm
Frequently a branch of the Posterior Cutaneous Nerve of the Forearm

Question 3

Lateral Cutaneous Nerve of the Forearm

Answer 3

C6 C7
Terminal Branch of Musculocutaneous Nerve
Skin on the Lateral Side of the Forearm

Question 4

Medial Cutaneous Nerve of the Arm

Answer 4

C8-T2
Arises from the Medial Cord of the Brachial Plexus
Often uniting in the Axilla with the Lateral Cutaneous branch of the 2nd Intercostal Nerve
Skin over the Medial Side of Arm

Question 5

Posterior Cutaneous Nerve of the Arm

Answer 5

C5-C8
Branch of Radial Nerve
Skin on the Posterior surface of the Arm

Question 6

Superior Lateral Cutaneous Nerve of the Arm

Answer 6

C5 C6
Terminal Branch of Axillary Nerve
Emerges from beneath the Posterior aspect of the Deltoid
Supply skin over the Lower part of the Deltoid and Lateral side of the Midarm

Question 7

Posterior Cutaneous Nerve of the Forearm

Answer 7

C5-C8
Branch of the Radial Nerve
Skin on the Posterior surface of the Forearm

Question 8

Subraclavicular Nerve

Answer 8

C3 C4
Anterior to the Clavicle, immediately to the Platysma
Supply skin over the Clavicle and the Superolateral aspect of the Pectoralis Major