The subclavius is a small triangular muscle placed between the clavicle and the first rib.Along with the pectoralis major and pectoralis minor muscles the subclavius muscle makes up the anterior wall of the axilla.
This page contains content from the copyrighted Wikipedia article "Subclavius muscle"; that content is used under the GNU Free Documentation License (GFDL). You may redistribute it, verbatim or modified, providing that you comply with the terms of the GFDL.