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Blood flows through the heart and generates noises known as heart sounds. These noises occur due to heart valves opening and closing as the heart pumps blood. A doctor can gain valuable information by ...

S1 is the first heart sound that doctors can hear using a stethoscope. The vibrations that occur when the mitral and tricuspid valves in the heart close produce the S1 sound. There are two common ...

Back 4 Blood has a big warning if you attempt to jump in solo, and it’s started to freak some players out. But have no fear, zombie loners: Back 4 Blood with bots isn’t as bad as it sounds. If you go ...