1) How much blood do adults have moving through their bodies ? a) 5 liters b) 3 liters c) 8 liters d) 2 liters e) 100 liters f) 1 liter 2) How many chambers does the heart have ? a) 4 chambers. b) 8 chambers c) 1 chamber d) 5 chambers e) 2 chambers f) 3 chambers 3) What is included in the circulatory system ? a) blood, arteries , blood vessels, and the heart b) blood ,veins ,and heart c) arteries and heart d) arteries ,blood vessels, bones and veins e) blood, arteries, veins, bones, heart and skin 4) Capillaries lead to…? a) Veins b) Muscle c) Bones d) Lower back e) Brain f) Heart 5) An artery carries blood away from the…? a) heart b) veins c) bones d) brain e) skin f) lower back 6) When the heart contracts and ________ , it pushes blood out to the body. a) sleeps b) dissapears c) pumps d) desintegrates e) uncontracts f) relaxes 7) How does your blood keep moving through your blood vessels? a) It is moved by your muceles and your bones b) It is pushed by the bones, non stop c) It is pumped, nonstop, by your heart.  8) The lower right chamber of your heart has the thickest muscle because it pumps harder than other chambers ? a) true b) false 9) This chamber pumps blood out to the rest of the body a) left verticle b) upper left verticle c) right verticle d) upper right verticle 10) The faster the swimmer strokes, the faster the heart will…? a) disapear b) beat c) pump d) be stronger e) reapear

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