胸部标志线 Anterior median line Sternal line Midclavicular line Parasternal lineTHIRD MILITARY MEDICAL UNIVERSITY COLLEGE OF BASIC MEDICAL SCIENCES THIRD MILITARY MEDICAL UNIVERSITY COLLEGE OF BASIC MEDICAL SCIENCES THIRD MILITARY MEDICAL UNIVERSITY COLLEGE OF BASIC MEDICAL SCIENCES 8 胸部标志线 Anterior median line Sternal line Midclavicular line Parasternal line