Axilla region

like a tourist advertisement, Gray's says this is the GATEWAY TO THE UPPER LIMB
Axilla boundaries

Muscles

Surface markings, actions and nerve supply of:

Contents

Appreciation that the axilla transmits the neurovascular bundle from the neck to the upper limb

Axillary artery as a source of the blood supply to the circumflex humeral arteries. Detailed knowledge of the branches of the axillary artery NOT required

Knowledge of its root derivation (C5-T1)
Broad appreciation of the root / trunk / division / cord structure
Detailed knowledge of which nerves derive through which cord NOT required
Appreciation of the potential for plexus damage based upon its position in the axilla