O Arterial pressure when ventricles are relaxed Arterial pressure when all chambers of the heart...
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O Arterial pressure when ventricles are relaxed Arterial pressure when all chambers of the heart are relaxed Arterial pressure when all chambers of the heart are contracted Arterial pressure when ventricles are contracted Question 4 1 point Why did the vertebrate heart evolve from a smaller two chambered pump to a larger more robust four chambered one To be able to handle pumping blood through larger animal bodies The four chambered heart increases the flow rate of blood through the body in order to meet the higher oxygen demand of endothermic animals The four chambered heart separates the blood circulation into one circuit for vital organs and one circuit for nonvital structures More derived vertebrate groups have a more complex and robust four chambered heart because they have more complex nervous systems
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