axillary nerve

The axillary nerve is a nerve of the human body, that comes off the posterior cord of the brachial plexus at the level of the axilla (armpit) and carries nerve fibers from C5 and C6. The axillary nerve travels through the quadrangular space with the posterior circumflex humeral artery and vein. [WP,unvetted]. Every claim on this page comes from the Leumas anatomy graph and carries its source.

What the axillary nerve is

The axillary nerve is a nerve of the human body, that comes off the posterior cord of the brachial plexus at the level of the axilla (armpit) and carries nerve fibers from C5 and C6. The axillary nerve travels through the quadrangular space with the posterior circumflex humeral artery and vein. [WP,unvetted]. The atlas records it as a nerve at the organ scale in the human body.

Where the axillary nerve is

It sits in the upper limb, within the nervous system. Positioned deliberately as part of this species body plan.

What the axillary nerve connects to

The atlas records 10 typed relationships for it, across 4 kinds of connection. part of arm, brachial nerve plexus and forelimb, and 1 more.

Supply and innervation

This dataset asserts no arterial supply, venous drainage or innervation for the axillary nerve. Only a minority of structures carry those edges here, so an empty answer means nothing has been recorded — not that there is nothing to record.

Also called

Also recorded as circumflex humeral nerve, auxillery nerve, circumflex nerve and nervus axillaris. Searching any of those names reaches this page.

Source

Uberon multi-species anatomy ontology (Mungall et al.), CC BY 4.0. Term UBERON:0001493, version 2026-06-19, retrieved 2026-08-24. Licence: CC-BY-4.0.

• Part of: arm, brachial nerve plexus, forelimb and limb.
• A kind of: nerve.
• Innervates: axilla, deltoid, teres minor muscle and triceps brachii.
• contains: axillary nerve trunk.

Questions

Where is the axillary nerve?

It sits in the upper limb, within the nervous system. Positioned deliberately as part of this species body plan.

What does the axillary nerve connect to?

Part of: arm, brachial nerve plexus, forelimb and limb.

Is the axillary nerve the same in other species?

Leumas holds the same relationship vocabulary for every species it carries, so where another dataset records this structure you can put the two side by side on /compare.