Medicine
Medicine, 13.09.2019 19:30, emilybrown21304

During the contraction phase of the cardiac cycle, the heart
a. pumpls blood to the body
b. repolarizes
c. rests and recovers
d. refills

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Health, 01.07.2019 20:00, coolcat3190
Marking brainlest answer ! the cardiac cycle fill in all of the blanks the cardiac cycle consists of two phases; a period where the heart muscle is relaxed, called and a period of contraction, called these are then divided into a further 4 stages. these are; 1. 2. 3. 4. at rest, cardiac diastole lasts for approximately 0.5 seconds, and cardiac systole takes approximately 0.3 seconds to complete. however during exercise, when the heart rate is increased the time period of especially is reduced.
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Health, 23.09.2019 15:30, 21tywmeb
Which best describe the isovolumetric contraction phase of the cardiac cycle? which best describe the isovolumetric contraction phase of the cardiac cycle? as ventricular systole starts, the av valves are closed and the semilunar valves are closed. because the ventricles are contracting and both valves are closed, pressure increases rapidly leading to ejection. as ventricular systole starts, the av valves close, which immediately opens the semilunar valves. the pressure from the atrial contractions opens the semilunar valves. as pressure builds up in the ventricles during systole, the av valves open and allow blood to leave the heart.
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Biology, 25.09.2019 20:40, ayalat9596
During the phase of the cardiac cycle called , the entire heart is relaxed and blood flows into all four chambers. 2. during the phase of the cardiac cycle called , the heart contracts beginning with the atria and then the ventricles. 3. when the ventricles contract, the snap closed. 4. a defective heart valve can be identified by the sound of a(n) . 5. the , or pacemaker, initiates the heartbeat by generating electrical impulses that spread across both atria. 6. impulses are delayed briefly at the and are then transmitted through special fibers to the base of the ventricles. strong contractions begin at the apex of the heart and drive blood up and out of the heart. 7. a(n) records the electrical changes that occur during the heartbeat and provides data on the health of the heart.
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During the contraction phase of the cardiac cycle, the heart
a. pumpls blood to the body
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