Your heart works constantly to keep your blood moving throughout your body. Your pulse is part of the circulatory system. In an average lifetime, the heart beats more than two and a half billion times, without ever pausing to rest. Explore the circulatory system by looking at All About Your Heart at KidsHealth. Look at MEDtropolis - Virtual Body: Human Heart Read page 330 - 337 in your Science Book. 1. What does each side of your heart do? Label the picture of the heart showing the various parts. On your drawing, color the arrows indicating the flow of the blood through the heart. What do you need to do to keep your heart healthy? Blood is made up of four parts: red blood cells, white blood cells, plasma, and platelets. What does each part do? How much blood is in the average adult's body? What happens when you loose a small amount of blood? Why are blood cells red? Hint: Check under Red Blood Cells. Tell at least two interesting facts you learned about the circulatory system. 2. On a 3x5 card write which of the four parts of blood does the following job: a. Delivers oxygen and removes waste b. Gathers at wounds and clots to stop blood flow c. Attacks germs d. A high number of these cells can cause leukemia, a blood cancer e. Is 90% water and an essential ingredient for human survival f. Contains a protein chemical called hemoglobin |
