The stethoscope allows us to listen to area's inside the body such as , the heart, lungs, carotid arteries, bowell sounds...This allows up to pick up on abnormalities such as Heart Arrythmia's, abnormal breath sounds, absent or decreased bowell sounds, blood flow through the Carotid Arteries....This is an extremely useful tool for all medical professionals...Also use for taking blood pressure and other uses...Thanks for the question..Hope this was helpful...God Bless
