> In the human heart, which chambers are located at the bottom of the heart?And the answer: ventricles. Photo credit: Shutterstock.The human heart has four chambers. Near the top arethe left atrium and the right atrium, and at the bottom are the left and rightventricles. The atria receive blood from the body, and pass to the ventricles.The ventricles then pump blood back out of the heart, into the rest of the body. Although most are aware of the heart's central, life-giving purpose in our body,there is a lot that goes on behind the scenes. For one, did you know that thehuman heart pumps over 8000 liters (over 2,100 gallons) of blood through ourbodies every day? That's enough to fill an entire tanker truck! All that bloodis calculated using cardiac output, which is about 6 liters per beat. With over100,000 heartbeats per day, the heart proves itself to be one of the most vitalorgans in our body. Or, did you know that the heart can beat even when separated from the body?Since the heart has its own electrical impulse, it is not regulated by the brainand can beat all on its own volition. The heart even has naturally generatedpace makers, that regulate electrical impulses and create cardiac rhythm (think:thump thump. Thump thump. Thump thump).The heart is actually in the center of your chest, rather than the left side.While most believe their hearts are slightly off center, it's actually closer toyour sternum than you think. Our bodies have evolved the protective casing thatis our ribs to protect not only our lungs, but our heart, too.