This video explains cardiac blood flow. Each time your heart beats, it pumps out oxygen- and nutrient-rich blood to your body. Blood flows through a network of vessels called the circulatory system. When blood returns to your heart, it flows to your lungs to receive oxygen. Then your heart pumps that blood out to the rest of your body, and the process begins again.
What is the role of blood flow through the heart?
Your heart is a powerful muscle, about the size of your fist. Every second, it pumps nutrient- and oxygen-rich blood to your body. With each heartbeat, your heart sends blood through your circulatory system.
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