This is my route back to the liver, taking Oxy along. I am so tired of getting pushed and shoved, I think I will just drop oxy off and stay there and retire to the recycle plant. Can you guess the name of the pump? The heart F. 1. Label the figure that illustrates the conduction system of the heart. The labels are as follows: sinoatrial valve (SA node) atrioventricular valve (AV node) AV bundle/Bundle of His Purkinje fibers 2. What is the cardiac cycle? The cardiac cycle comprises one complete heartbeat with both atrial and ventricular contractions. The following sentences illustrate the actions that occur during the cardiac cycle. Complete the blanks using the words provided. Words may be used more than once. atria contraction aorta pulmonary veins open ventricles pulmonary artery relaxed semilunar bicuspid tricuspid closed Depolarization 1. The SA node stimulates the contraction of both atria. Blood flows from the atria into the ventricles. The ventricles are relaxed, the semilunar valves are closed, and blood cannot enter the pulmonary artery and aorta. 2. The AV node receives the impulse from the SA node and stimulates the contraction of both ventricles, which pumps blood into the pulmonary artery and aorta. The atria are relaxed and the tricuspid and bicuspid valves are closed. Repolarization 3. The ventricles are relaxed and the semilunar valves are closed, which prevents blood from flowing back into the ventricles. The heart rests. 4. On an electrocardiogram: A. What action of the heart does the P wave and QRS wave represent? The P wave and QRS wave represent the depolarization of the heart. B. What action of the heart does the T wave represent? The T wave represents the repolarization of the heart. C. What information does an EKG give the physician? By observing the size, shape, and location of each wave, the physician can analyze and interpret the conduction of electricity through the cardiac cells, the the heart’s rate, rhythm, and the general health of the heart. heart’s
This is my route back to the liver, taking Oxy along. I am so tired of getting pushed and shoved, I think I will just drop oxy off and stay there and retire to the recycle plant. Can you guess the name of the pump? The heart F. 1. Label the figure that illustrates the conduction system of the heart. The labels are as follows: sinoatrial valve (SA node) atrioventricular valve (AV node) AV bundle/Bundle of His Purkinje fibers 2. What is the cardiac cycle? The cardiac cycle comprises one complete heartbeat with both atrial and ventricular contractions. The following sentences illustrate the actions that occur during the cardiac cycle. Complete the blanks using the words provided. Words may be used more than once. atria contraction aorta pulmonary veins open ventricles pulmonary artery relaxed semilunar bicuspid tricuspid closed Depolarization 1. The SA node stimulates the contraction of both atria. Blood flows from the atria into the ventricles. The ventricles are relaxed, the semilunar valves are closed, and blood cannot enter the pulmonary artery and aorta. 2. The AV node receives the impulse from the SA node and stimulates the contraction of both ventricles, which pumps blood into the pulmonary artery and aorta. The atria are relaxed and the tricuspid and bicuspid valves are closed. Repolarization 3. The ventricles are relaxed and the semilunar valves are closed, which prevents blood from flowing back into the ventricles. The heart rests. 4. On an electrocardiogram: A. What action of the heart does the P wave and QRS wave represent? The P wave and QRS wave represent the depolarization of the heart. B. What action of the heart does the T wave represent? The T wave represents the repolarization of the heart. C. What information does an EKG give the physician? By observing the size, shape, and location of each wave, the physician can analyze and interpret the conduction of electricity through the cardiac cells, the heart’s rate, the heart’s rhythm, and the general health of the heart.
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