1) It is the main component of the circulatory system a) LUNGS b) BRAIN c) HEART 2) Where do the red blood cells collect the oxygen for the body? a) LUNGS b) BRAIN c) HEART 3) the heart... a) CLEANS BLOOD b) LEAVES BLOOD c) PUMPS BLOOD 4) The heart a) IS A BONE b) IS A MUSCLE c) IS A JOINT 5) arteries... a) carry blood with oxygen and nutrients from the heart to the body b) carry blood with carbon dioxide and waste from the body to the heart. c) connect the blood vessels 6) capillaries.... a) carry blood with O2 and nutrients from the heart to the body b) carry blood with CO2 and waste from the body to the heart. c) connect the blood vessels to exchange the oxygen and carbon dioxide 7) Veins.... a) carry blood with O2 and nutrients from the heart to the body b) carry blood with CO2 and waste from the body to the heart. c) connect the blood vessels to exchange the oxygen and carbon dioxide 8) the circulatory system a) transports water and air to cells and carries away wastes. b) transports oxygen, nutrients, and other substances to cells and carries away wastes. c) transports only oxygen 9) Usually, in the diagrams of the circulatory system they are represented with color blue a) arteries b) capillaries c) veins 10) Usually, in the diagrams of the circulatory system they are represented with color red a) arteries b) capillaries c) veins 11) The aorta a) is the main vein in the human body b) is the main artery in the human body c) is the main capillary in the human body 12) The main vein that is connected to the heart is called.... a) vena cava b) femoral vein c) aorta 13) yellow liquid in which all components of the blood are suspended a) red blood cells b) white blood cells c) plasma d) platelets 14) When the blood vessels break internally they form a  a) wound b) bruise 15) they collect and transport oxygen to all the body a) red blood cells b) white blood cells c) plasma d) platelets 16) they stop bleeding by producing blood clogs and scabs a) red blood cells b) white blood cells c) plasma d) platelets 17) they defend the body against infections and disease a) red blood cells b) white blood cells c) plasma d) platelets 18) When there is external bleeding, it forms a .... a) wound b) bruise 19) When you have a small superficial cut, your probably damaged this blood vessel... a) veins b) capillaries c) arteries

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