<P> 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 the neck , over the first rib , and into the armpit . It supplies afferent and efferent nerve fibers to the chest , shoulder , arm and hand . </P>
<P> 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 the neck , over the first rib , and into the armpit . It supplies afferent and efferent nerve fibers to the chest , shoulder , arm and hand . </P>
where do all nerves in the arm root from
where do all nerves in the arm root from
brachial plexus
brachial plexus