Your valves ensure that blood flows only in one direction. Heart valves open and close to allow for proper blood flow. You have a left ventricle and a right ventricle.īetween the top and bottom chambers, you have heart valves. Ventricles are your two lower heart chambers.You have a left atrium and a right atrium. Atria are your two upper heart chambers.If you look at a diagram of a heart, these chambers divide into upper and lower chambers and left and right chambers.

The chambers are like rooms in the “house” of your heart. Your heart itself is made of muscle nourished by blood vessels. Veins carry oxygen-poor blood from your body’s tissues back to your heart.Capillaries are tiny, thin blood vessels that connect veins and arteries.Arteries carry oxygen-rich blood away from your heart.Blood flows through three types of blood vessels: Blood vessels are small tubes that carry blood all over your body. Your circulatory system is a network of blood vessels. It also carries waste products such as carbon dioxide away from your tissues. Blood carries oxygen and nutrients from your heart to other tissues throughout your body. With each heartbeat, your heart sends blood through your circulatory system.īlood is crucial to remain alive. Every second, it pumps nutrient- and oxygen-rich blood to your body. Your heart is a powerful muscle, about the size of your fist. What is the role of blood flow through the heart?

Boze heart to heart 2