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3:58
เพลง Cardiac cycle ทำนองเพลง จังหวะหัวใจ
25 Oct 2009
2592
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2:46
Have you heard your heart beat? What is the sound like? Yes, it sounds like ‘lubb-dubb’, ‘lubb-dubb’! This sound is produced when the heart produces a pressure when it beats. Now, what causes the beating of the heart? The sequence of events that take place during a single heart beat is known as the Cardiac Cycle. It is not so simple. It is a complex process which involves a sequence of activities and that too within 0.8 sec. The cardiac cycle consists of a systole and a diastole. The cardiac cycle begins with a joint diastole (relaxation of all four chambers of the heart). This is followed by an arterial systole (contraction of left and right atria) stimulated by the generation of an action potential by the Sino-Auricular Node (SA node). As a result of the arterial systole, the blood from the atria drains into the ventricles. The impulse produced by the SA Node is then picked up by the Atrio-Ventricular Node (AV node) and is conducted throughout the ventricles leading to the ventricular systole. During the ventricular systole, the blood from the ventricles is drained into the aorta and the pulmonary artery. This is followed by closing of the AV valves which produces the sound ‘lubb’ and the closure of the Semilunar valves causes produces the sound ‘dub’. Watch more education videos at *******www.meritnation****/products/demo/online Know your cardiac cycle, heart and blood flow in heart.
30 Jul 2010
2023
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9:40
What is cardiac cycle? What is systole and diastole? Watch 700+ Medical Lectures at www DrNajeebLectures com
8 Jan 2017
260
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9:45
What is cardiac cycle? What is systole and diastole? Watch 700+ Medical Lectures at www DrNajeebLectures com
8 Jan 2017
222
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8:11
What is cardiac cycle? What is systole and diastole? Watch 700+ Medical Lectures at www DrNajeebLectures com
8 Jan 2017
197
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9:38
What is cardiac cycle? What is systole and diastole? Watch 700+ Medical Lectures at www DrNajeebLectures com
8 Jan 2017
259
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9:11
What is cardiac cycle? What is systole and diastole? Watch 700+ Medical Lectures at www DrNajeebLectures com
8 Jan 2017
216
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9:56
What is cardiac cycle? What is systole and diastole? Watch 700+ Medical Lectures at www DrNajeebLectures com
8 Jan 2017
297
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9:28
What is cardiac cycle? What is systole and diastole? Watch 700+ Medical Lectures at www DrNajeebLectures com
8 Jan 2017
294
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7:24
What is cardiac cycle? What is systole and diastole? Watch 700+ Medical Lectures at www DrNajeebLectures com
8 Jan 2017
269
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1:27
shows how blood is pumped in and out of the heart.
25 Sep 2008
96151
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1:27
how heart respiration works
7 Nov 2008
17052
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