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The "lubb" sound is produced when the atrioventricular valves in the heart close.
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∙ 13y ago
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What is the difference between lub and dub?
The difference between lub and dub (The heart sounds S1 and S2 of a heartbeat) is that the lub occurs when atrioventricular valves close, and dub occurs when the aortic and pulmonary valves close (valves leading out of the heart from the left and right ventricles).
What are the two heartbeat sounds?
The normal sinus rhythm sounds like a "lub-dub". The "lub" is the sound of the two atrioventricular valves (mitral for left atrium to left ventricle, tricuspid for right atrium to right ventricle) closing immediately after atrial contraction and then relaxation. The "dub" is the sound of the two sumilunar valves (aortic for left ventricle to aorta, pulmonary for right ventricle to pulmonary artery) closing immediately after ventricular contraction and then relaxation.
What happen if a physician hears two lub sounds instead of one?
When an physician hears two lub sounds instead of one, this means that the atrioventricular valves are closing unevenly. They are supposed to close at the same time.
What heart sound is stronger at the apex of the heart?
First heart sound S1-LUB
The lub or first heart sound is produced by the closing of?
there are 2 sounds the heart makes. "lub-dub" the first ("lub") is when the atrioventricular valves sclose the second ("dub") is when the semilunar valves close
What causes the lub-dub sound of your heartbeat?
The 'lub' is the S1 sound. It occurs due to normal closure of the mitral and tricuspid (atrioventricular) valves. With these valves closed, systole commences and blood is actively squeezed from the ventricles. The second sound is the 'dub' or S2 sound. It occurs as the aortic (to LV) and pulmonary (to RV) valves close to prevent backflow from the blood ejected from the ventricles and marks the beginning of diastole (or filling) of the heart.
What is the Lub-Dub sound?
In the lub-dub version of heart sound, dub is caused by the back rush of blood against a closed aortic or pulmonary valve.
What sound does a beating heart make?
lub dub lub dub
What monosyllables are used to describe heart sounds?
Heart sounds are noises generated by the beating heart from the flow of blood through it. Thump, boom can be used to describe it. Lub and Dub are also used. There are other sound words that suggest problems with the hearbeat as well.
What makes the first sound of a heartbeat?
The first sound, LUB, is made after the ventricular systole due to the shutting of bicuspid and tricuspid (AV) valves.
Which heart sound is the loudest sound when auscultated and the reason?
lub
Where is the s1 heart sound heard the loudest?
S1 makes a "lub" sound. It is the first heart sound in a normal rhythm. The sound is produced when the AV valves close.
The normal heart sounds heard through a stethoscope are caused by the contractions of the ventricles?
Normal heart sounds (often called lub-dub) are caused by the pressure changes in the ventricles closing the various heart valves. The first sound, lub, is caused by the closing of the atrioventricular valves after the ventricles have filled with blood and as the ventricles begin to contract. The second sound, dub, is caused by the closing of the semilunar valves as the ventricles relax after pushing blood forward.
What causes the lub-dup heart sounds that are heard with the stethoscope?
The cardiac sounds (typically described as lub-dub) are caused by the closing of the cardiac valves. The first sound (lub) is caused by the closing of the mitral and tricuspid valves and the second (dub) is caused by the closing of the aortic and pulmonic valves.
When the blood passes to the right or left ventricle a valve will close between the atrium and ventricle what sound does it create?
The closure of the atrioventricular valves causes the first heart sound. We hear this as the "lub" of the "lub DUB" heart beat.
