Study note
AnatomyAxilla

First part of the axillary artery: medial relation and sheath

THE CONTEXT
The passage identifies the medial vessel relation and the fascial enclosure of the first part of the axillary artery.

Medial relation

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The axillary vein lies medial to the first part of the axillary artery.

Axillary sheath

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The first part of the axillary artery and the brachial plexus are enclosed together in the axillary sheath.
•
The axillary sheath is derived from the prevertebral layer of deep cervical fascia.
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