PSL301H1 Lecture Notes - Lecture 3: Wiggers Diagram, Cardiac Action Potential, Pulmonary Circulation
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PSL301H1 Full Course Notes
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Document Summary
Cardiac action potential to aortic flow: summary: electrical signals originate in the sa node, and are propagated throughout the heart. Sequence of events that occur when the heart beats. There are two phases of this cycle: Overall aim: understand and integrate electrical activity, contraction, and blood flow in/out of the heart. (cid:314) results in orderly movement of blood. Blood flows high pressure low pressure. Events on the right and left sides of the heart are the same, but pressures are lower on the right. Entricle spend of the cycle in diastole because. Diastole atrial: health fill until you have wave: push blood into the ventricle just before ventricle contract. Now ventricle want to contract but can"t. Because the valves (both a and semilunar) are close (cid:314) you have a chamber with fluid which is not compressible. The pressure has to increase till it"s higher than pressure in the aorta.
