1. By: Joshua,Thomas,Ronan,and George

2. The Heart  Your heart is a vital organ that pumps your blood throughout your whole entire body.  Your system of blood vessels like arteries, veins and capillaries is over 60,000 miles long.  Also, blood only takes about 20 seconds to circulate throughout the entire vascular system!

3. Components of Blood  Your blood contains red blood cells, white blood cells, platelets, and plasma.  Red blood cells, are relatively large microscopic cells.  Red blood cells carry oxygen from the lungs to the tissues around your body.  Red blood cells carry oxygen from the lungs to the tissues around your body.  They are also a key player in getting waste carbon dioxide from your tissues to your lungs, where it can be exhaled out.  They are also a key player in getting waste carbon dioxide from your tissues to your lungs, where it can be exhaled out.

4. The Structure of The Heart YYYYour heart has four chambers, the upper chambers are called the left and right atria, and the lower chambers are called the left and right ventricles. AAAA wall of muscle called septum separates the left and right atria, and the left and right ventricles.

5. Components of Blood part 2  White blood cells are soldiers, because they fight illnesses, bacteria, funguses and viruses.  Platelets are important because they clot the blood when you have a cut.  Plasma is a liquid that makes all the cells flow.

6. Heart Facts YYYYour heart beats about 100,000 times in one day, and about 35 million times in a year! AAAAlso during an average lifetime, the human heart will beat more than 2.5 billion times! TTTThe heart pumps about 1 million barrels of blood during an average lifetime! That's enough to fill more than 3 super tankers!

7. Veins vs. Arteries  Veins carry deoxygenated (no oxygen) blood.

8. How to Keep Your Heart Healthy  To keep your heart healthy, eat healthy foods like vegetables, and fruits.  Another way to keep your heart healthy is to not smoke, and not drink.  Also to keep your heart healthy exercise regularly but not hard.