infraclavicular part of brachial plexus

in·fra·cla·vic·u·lar part of brach·i·al plex·us

[TA] the part of the brachial plexus that extends from the level of the clavicle downward into the axilla; it includes the cords of the plexus and their branches. Synonym(s): pars infraclavicularis plexus brachialis [TA]