brachial plexuses

Main Entry: brachial plexus
Function: noun
: a complex network of nerves that is formed chiefly by the lower four cervical nerves and the first thoracic nerve, liespartly within the axilla, and supplies nerves to the chest, shoulder, and arm

brachial plexus n.
A network of nerves located in the neck and axilla, composed of the anterior branches of the lower four cervical and first two thoracic spinal nerves and supplying the chest, shoulder, and arm.