Superior Lateral Brachial Cutaneous Nerve
Nervus cutaneus lateralis superior brachii
Read moreQuick Facts
Origin: Axillary nerve (C5-C6).
Course: Loops around the deltoid muscle to become superficial.
Branches: No named branches.
Supply: Skin of the posterior arm and inferior deltoid region.
Related parts of the anatomy
Origin
The superior lateral brachial cutaneous nerve arises from the axillary nerve. It contains sensory nerve fibers which eventually relay the sensory information to the dorsal horns of the C5 and C6 cervical segments of the spinal cord.
Course
The superior lateral brachial cutaneous nerve exits the axilla via the quadrangular space to enter the posterior scapular region, as the distal continuation of the axillary nerve. It loops around the posterior aspect of the deltoid muscle and travels superiorly to innervate the skin of the posterior arm, including the skin over the inferior part of the deltoid.
Branches
No named branches.
Supplied Structures
The superior lateral brachial cutaneous nerve carries general sensations from the skin over the posterior arm and the inferior part of the deltoid muscle region.
