place the event of a cardiac cycle in order. - The atria begin to contract following depolarization of the atria and pump blood into the ventricles. When the pressure falls below that of the atria, blood moves from the atria into the ventricles, opening the atrioventricular valves and marking one complete heart cycle. - The ventricles begin to contract, raising pressure within the ventricles. - - Following ventricular repolarization, the ventricles begin to relax, and pressure within the ventricles drops. v Blood flows passively from the veins into the atria and past the atrioventricular valves into the ventricles. When ventricular pressure rises above the pressure in the two major arteries, blood pushes open the two semilunar valves and moves into the pulmonary trunk and aorta in the ventricular ejection phase.

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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place the event of a cardiac cycle in order.
The atria begin to contract following depolarization of the atria and pump blood into the ventricles.
When the pressure falls below that of the atria, blood moves from the atria into the ventricles, opening the
atrioventricular valves and marking one complete heart cycle.
v The ventricles begin to contract, raising pressure within the ventricles.
Following ventricular repolarization, the ventricles begin to relax, and pressure within the ventricles drops.
v Blood flows passively from the veins into the atria and past the atrioventricular valves into the ventricles.
When ventricular pressure rises above the pressure in the two major arteries, blood pushes open the two
semilunar valves and moves into the pulmonary trunk and aorta in the ventricular ejection phase.
Transcribed Image Text:place the event of a cardiac cycle in order. The atria begin to contract following depolarization of the atria and pump blood into the ventricles. When the pressure falls below that of the atria, blood moves from the atria into the ventricles, opening the atrioventricular valves and marking one complete heart cycle. v The ventricles begin to contract, raising pressure within the ventricles. Following ventricular repolarization, the ventricles begin to relax, and pressure within the ventricles drops. v Blood flows passively from the veins into the atria and past the atrioventricular valves into the ventricles. When ventricular pressure rises above the pressure in the two major arteries, blood pushes open the two semilunar valves and moves into the pulmonary trunk and aorta in the ventricular ejection phase.
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