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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.
Wiki User
∙ 12y ago
Wiki User
∙ 12y agoHeart sounds are described by the syllables "lub" and "dub." The sequence is lub-dub, pause, lub-dub, pause, and so on. The first sound (lub) is caused by the closing of the AV valves, and the second sound, (dub) is caused by the closing of the semilunar valves at the end of a systole.
The first sound (lub) is louder and longer and the second (dub) is short and sharp.
Wiki User
∙ 12y agoThe Dub sound occurs when the semi-lunar valves close.
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What causes your heartbeat to rise?
drugs
What makes the sound of your heartbeat?
The heart valves.
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 is the hoped for result of a catheter ablation?
This usually causes the irregular heartbeat to be reset into a normal heartbeat.
What word is used for a heartbeat sound?
thump thump!
How will you call the sound of the heartbeat?
They are called Lubb Dubb
How is heart sound related to heartbeat?
are related the sound because is cionsideriza to heart beat hahahahha.
What are 2 repetition in the tell take heart?
the sound of a heartbeat
How is the sound of the heartbeat created?
A tiny dinosaur banging a drum
What causes a weak slow heartbeat?
A weak and slow heartbeat can be caused by conditions such as heart block, sick sinus syndrome, or electrolyte imbalances. It can also be a side effect of certain medications or a result of aging. It's important to consult a healthcare professional for an accurate diagnosis and appropriate treatment.
What causes the heartbeat to increase?
by doing activities and being scared or screaming
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.
