MEDICAL
HEART AND PERICARDIUM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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blood goes inside the heart
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blood goes out the rest of the body
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blood gets stuck
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heart is resting
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Detailed explanation-1: -Heart sounds are created from blood flowing through the heart chambers as the cardiac valves open and close during the cardiac cycle . Vibrations of these structures from the blood flow create audible sounds-the more turbulent the blood flow, the more vibrations that get created.
Detailed explanation-2: -The first sound LUB is produced when the atrioventricular valves i.e. tricuspid and bicuspid valves close at the start of ventricular systole. The second sound DUB is produced at the beginning of ventricular diastole when the pulmonary and aortic semilunar valves close.
Detailed explanation-3: -The second “Dub” sound marks the start of the relaxation of the ventricles known as ventricular diastole. The sound is caused by the closure of the pulmonary and aortic valves. These valves prevent blood from rushing back into the ventricles after contraction has occurred.