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essay question

AB
starting with deoxygenated blood in the vena cava and finishing with the aorta. describe blood circulation from start to finish.1) blood enters the heart through the venae cavae and the pulmonary veins 2) heart inflated as blood enters atria and venticules througth A-V valves 3) full atria contact, "toppign of venticles to full capacity 4) A-V valves close; ventricles contract forcing blood out of th eheart through the semilunar valves into the aorta.


hunter

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