Zani Zartashah22/11/2015SBI3U1The Circulatory System1. The circulatory system is the life support system that feeds your cells with food and oxygen. 2. Three parts of the circulatory system are the heart, the blood vessels and the blood. 3. The size of your heart is the size of your fist. The heart is shaped like a cone. It is located in the center of your chest between the lungs. 4. The four chambers of the heart are the right atrium, left atrium, right ventricle, and left ventricle.5. The valves keep blood from flowing backwards making sure to keep blood flowing in only ONE DIRECTION.6. The circulatory system is to carry materials to and from all the parts of the body. 7. The heart is made up a bundle of cardiac muscles. 8. The heart pumps by contacting and relaxing. 9. When the top part of the heart contracts, he bottom relaxes. When the bottom contracts the top relaxes. In detail, when the atria contract, the tricuspid and bicuspid valves open. When the ventricles contracts, the pulmonary and aortic valves open. Blood is pumped out to the lungs and body. The valves between the atria and ventricles slam shut. 10. The blood flows through the right atrium, right ventricle, left atrium, and left ventricle. 11. After the blood leaves the right ventricle it is pushed past another valve into a blood vessel, this blood vessel goes to the lungs. 12. The blood picks up oxygen in the lungs. 13. After blood leaves the left ventricle it is pushed past a valve into a blood vessel. 14. 14. Blood rich in oxygen goes to the body. 15. The circulatory system is a closed system which means that blood stays inside the heart and vessels as it circulates. 16. Three kinds of blood vessels are: arteries, veins and capillaries.17. The purpose of the blood vessels is to form an intricate transportation network to service every cell. 18. In the arteries, blood moves away from the heart. 19. In the veins blood moves towards the heart.20. Capillaries are tiny vessels which connect the arteries to the veins. They are found between arteries and veins. 21. At the capillaries, food and oxygen pass from the blood to our cells. Also carbon dioxide and waste products pass from the cells to the blood. 22. Blood must go to the lungs before it can go to the body so that it can pick up oxygen. 23. Blood rich in oxygen should be in the arteries. 24. 25. Blood lacking oxygen should be in the veins 26. 27. No because the blood is deoxygenated after it goes around the body and must go to the lungs to get oxygenated again. 28. Capillaries take materials to the cell. 29. The two parts of blood are plasma and living cells. 30. Four functions of plasma are it transports: The blood cells The dissolved food to our cells The waste from our cells The blood-clotting materials

31. The three kind of blood cells are red blood cells, white blood cells and platelets.32. The red blood cells carry oxygen.33. Hemoglobin is a chemical in the red blood cells that carries the oxygen. It also gives the cells their red colour. 34. The white blood cells fight infections and disease germs. 35. The white cell count goes up when there is an infection because more of white blood cells are needed in order to fight the infection. 36. Platelets help stop bleeding by giving off chemicals. These chemicals combine with other chemicals in the plasma to form a blood clot to stop bleeding. 37. The function of blood is to carry most of the materials necessary for life. 38. Three parts of the circulatory system are the blood, blood vessels and the heart. 39. The function of the circulatory system is to carry materials to and from all parts of the body. 40. The key idea of this chapter is the circulatory system and how it operates inside the body in order for us to survive.