Circulatory System : Circulatory System Your Heart : Your Heart Your heart is a muscle located near the center of your chest. It is about the size of your fist. When the heart beats, it squeezes to send your blood out through your body. Your Blood Vessels : Your Blood Vessels Your blood vessels are made up of veins and arteries. These are the tubes that carry blood around the body. Arteries take blood away from the heart and the veins bring it back. Circulation : Circulation We call the movement of blood through our body circulation. Our heart works so well that it takes less than one minute for it to get blood to every cell in our body. Circulation : Circulation Your blood carries oxygen to all of the cells in the body. The heart pushes the blood into the lungs where it picks up the oxygen and delivers it to the cells. Circulation : Circulation The left side of the heart sends the blood and oxygen out to the body. This is the part of the diagram colored red. Circulation : Circulation The blood returns to the right side of the heart and gets sent back to the lungs to get a fresh supply of oxygen. This is the part of the diagram colored blue. Blood : Blood Remember, our heart moves all of this blood about once every minute. We have about 5 liters of blood in our body. That’s over a gallon! Take Care of Your Heart : Take Care of Your Heart It’s important to keep your heart in good shape. Here are some things you can do:
Remember, your heart is a muscle. Exercise it!
Eat a diet lower in fats and cholesterol.
Eat plenty of fruits and vegetables.
Eat a diet lower in sugars.
Don’t smoke! It can damage the heart and blood vessels. Something to Think About : Something to Think About The heart does enough work in one hour to lift 3000 pounds one foot off of the ground. That’s about the weight of a small car! More Information : More Information Click on the following link for more information about your circulatory system.