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The top of the heart is know as the Base
The bottom of the heart is known as the Apex
The atria are the 2 ________ chambers of the heart Upper
The ventricles are the 2 __________ chambers of the heart Lower
The left ventricle pumps oxygented blood out of the heart via the _______ Aorta
What functions as the pump of the circulatory system? Heart
What structure divides the sides of the heart? Septum
What do the heart valves do? Keep blood flowing in the correct direction