The axillary sheath is a fibrous sheath that encloses the

axillary artery In human anatomy, the axillary artery is a large blood vessel that conveys oxygenated blood to the lateral aspect of the thorax, the axilla (armpit) and the upper limb. Its origin is at the lateral margin of the first rib, before which it is c ...

and the three cords of the

brachial plexus The brachial plexus is a network () of nerves formed by the anterior rami of the lower four cervical nerves and first thoracic nerve ( C5, C6, C7, C8, and T1). This plexus extends from the spinal cord, through the cervicoaxillary canal in t ...

to form the neurovascular bundle. It is surrounded by the axillary fat.Last's Anatomuy, 9th Edt It is an extension of the prevertebral fascia of the deep cervical fascia. A brachial plexus nerve block can be achieved by injecting anaesthetic into this area.

References

External links

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Description at upstate.edu
Arteries of the upper limb Fascia {{Portal bar, Anatomy