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The heart is a vital organ that functions as a pump to circulate blood throughout the body. It has four chambers: the left and right atria and the left and right ventricles. Blood flows into the right atrium from the body, then to the right ventricle, which pumps it to the lungs for oxygenation. Oxygen-rich blood returns to the left atrium, moves to the left ventricle, and is then pumped out to the rest of the body. Valves between the chambers ensure blood flows in one direction. |
How does blood flow through the heart? Blood flows from the body to the right atrium, to the right ventricle, then to the lungs. Oxygenated blood returns to the left atrium, moves to the left ventricle, and is pumped out to the body.
What are the main parts of the heart? The atria, ventricles, valves, and major blood vessels.
Why are valves important in the heart? They ensure blood flows in the correct direction through the heart.
What is the function of the left ventricle? It pumps oxygen-rich blood to the rest of the body.
How does the heart maintain blood circulation? By continuously contracting and relaxing to pump blood through the circulatory system.
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Related words: how the heart works, blood flow, heart chambers, heart valves, circulatory system.