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The second heart sound occurs as a result of valve closure due to?
Wiki User
∙ 9y ago
The second heart sound, also called S2, is a result of the closing of the aortic and pulmonic valves. The heart sounds are described as sounding like "lub-dub".
Wiki User
∙ 9y ago
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Would turbulence of blood flow through the aortic valve give rise to the first heart sound?
No. The heart sounds are caused by the closure of heart valves. The first heart sound is caused by the closure of the AV valves (tricuspid and mitral). The second heart sound is the result of the closure of the aortic and pulmonic valve after the completion of systole. Turbulence of blood flow through the aortic valve would cause a murmur (an abnormal heart sound) during systole.
What parts of the heart make the beating sound?
The first heart sound, the so called "lub", comes from the closure of the atrioventricular valve. The second heart sound, the "dup", comes from the closure of the semilunar valve.
What causes the lubb dupp heart sounds that are heard while taking a apical pulse?
The closure of mitral and tricuspid valves causes the first heart sound. The second heart sound is produced by the closure of semilunar valves (pulmonic and aortic valves).
The second heart sound is caused by?
Closure of the two atrioventricular valves, specifically the tricuspid and mitral valves.
Why do heart beats sound like 2 quick beats?
The beats are caused by the valves in the heart closing. The first beat occurs when the ventricles contract. The pressure in them increases, so the atrioventricular valves close. The second beat occurs when the ventricles relax. As the pressure decreases, blood is sucked back from the aorta and pulmonary artery causing the semi lunar valves to close.
The first sound of a cardiac cycle occurs when?
closure of the mitral and tricuspid valves.
What is the sound of second heart sound?
The second heart sound (S2) is a short burst of auditory vibrations of varying intensity, frequency, quality, and duration. It has two audible components, the aortic closure sound (A2) and the pulmonic closure sound (P2), which are normally split on inspiration and virtually single on expiration. S2 is produced in part by hemodynamic events immediately following closure of the aortic and pulmonic valves. The vibrations of the second heart sound occur at the end of ventricular contraction and identify the onset of ventricular diastole and the end of mechanical systole.
Prolonged heart sound caused by incomplete closure of heart valves?
murmur
What is the medical condition cardiac tamponade?
Compression of the heart that occurs when the pericardium fills with blood or fluid. This increase in pressure outside the heart interferes with heart function and can result in shock and/or death.
What is an abnormal prolonged heart sound caused by incomplete closure of heart valves?
Abnormal heart sound caused by improper closure of heart valve is called a murmur. A murmur is caused by turbulent blood flow, when a heart valve either fails to open normally or fails to fully close.
The first heart sound is heard when?
S1 which is the closing of the atrioventricular valves.
What does the s1 sound of the heart signifies?
It signifies the closure of AV valves.
