1) The heart is a muscle that works as a ... a) pump b) filter 2) The heart pumps blood to the ...... to get oxygen. a) ventricle b) lungs 3) The heart, blood and blood vessels are part of the.... a) circulatory system b) respiratory system 4) Arteries and veins are types of ..... a) blood vessels b) capillaries 5) What purpose do capillaries serve? a) cleans the blood from toxins b) act as a spot where blood transfers from arteries to the veins, also they bring nutrients to organs 6) Do arteries bring oxygenated blood to the body, or deoxygenated blood to the heart? a) oxygenated blood to the body b) deoxygenated blood to the heart 7) What do veins do? a) bring oxygenated blood to the body b) bring deoxygenated blood to the heart 8) If you had to use this comparison, would the arteries and veins be more like a highway or like an exit ramp? a) highway b) exit ramp 9) If you had to use this comparison, would the capillaries be more like a highway or an exit ramp? a) highway b) exit ramp 10) The atrium rests above the ventricle-is this true or false? a) true b) false 11) Which part does the actual pumping of the blood, the atria (plural of atrium) or the ventricles? a) ventricles b) atria (plural) 12) Which side of the heart does the deoxygenated blood enter from, the right or the left? a) right b) left 13) The right ventricle pumps blood to where? a) the body b) the lungs 14) What leaves our body when we breathe out? a) oxygen b) carbon dioxide 15) If an adult's veins, arteries and capillaries are stretched out in a straight line, it would stretch around how many miles? a) 6,000 miles b) 60,000 miles 16) These carry blood with oxygen away from the heart to the rest of the body. a) arteries b) lungs 17) How long do red blood cells last, before the body needs to renew them? a) 12 months b) 4 months 18) The circulatory system is part of which part of the nervous sytem? a) somatic b) autonomic

Circulatory System

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