Copy Reference lines of thorax 1-Ant. median line 2-Sternal line 3-Midclavicular line 4-Parasternal line 5-Ant. axillary line 6-Mid. axillary line 7-Post. axillary line 8-Scapular line 9-Post. median line 567 3421 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 Reference lines of thorax 1-Ant. median line 2-Sternal line 3-Midclavicular line 4-Parasternal line 5-Ant.axillary line 6-Mid.axillary line 7-Post. axillary line 8-Scapular line 9-Post.median line 3 4 2 1 5 6 7 8 9