There are many abnormalities: mechanical sound, pericardial effusion fricative sound, pneumonia, pleurisy and pneumothorax after heart valve replacement ... The breathing pitch is high or low, and the intestinal peristalsis changes correspondingly due to the increase or decrease of bowel sounds, mostly due to intestinal obstruction caused by gastric retention ... The joint snapping is a joint disease, which may be the synovial ligament of tendon sheath and bone fricative sound-brother, you are broken. ...
And vocal cords
Because there is a cartilage in the middle, its tension will cause us to make different sounds. For example, the more tense it is, the smaller the gap and the sharper the sound.
In detail, heart sounds are produced by the impact of blood and heart valves. It follows a certain rhythm and melody. If the rhythm is wrong, it often implies a heart attack. If the heart valve is not tightly closed, blood will flow backwards.