Copy Right Deep cervical muscles n University Lateral Scalene fissure groups Brachial plexus Subclavian a 1-Scalenus anterior 2-Scalenus medius 3-Scalenus posterior Ant view of cervical muscles Copy Right- Hongqi ZHANG-Department of Anatomy-Fudan UniversityCopy Right- Hongqi ZHANG-Department of Anatomy-Fudan University Copy Right- Hongqi ZHANG-Department of Anatomy-Fudan University 1 2 3 1 3 2 Lateral groups Deep cervical muscles 1-Scalenus anterior 2-Scalenus medius 3-Scalenus posterior Ant.view of cervical muscles Scalene fissure Brachial plexus Subclavian a