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	14
	15
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Across 8. Allows oxygen to be passed into the blood and carbon dioxide to be removed. 5 9. Recieves oxygenated blood to the heart. 4/6 10. Stops blood from flowing back into the ventricles. 4/5/6 12. Artery that carries oxygenated blood from the heart. 5 14. Stops blood from flowing back into the left atrium. 8/5 15. One cell thick and allow gases to exchange. 11 16. Oxygenated blood pumped out of here to go to the rest of the body. 4/9 17. Transport oxygenated blood away from the heart to the body. 8

Down 1. An artery that carries deoxygenated blood to the lungs. 9,6 2. Takes deoxygenated blood to the right atrium. 4/4 3. Capillaries surround these and allow oxygen to pass into them and carbon dioxide to come out. 7 4. A vein that carries oxygenated blood to the heart. 9/4 5. Transport deoxygenated blood and waste products out of the body. 5 6. Another word for the heart. 7 7. Stops blood from flowing back into the right atrium. 9/5 11. Deoxygenated blood pumped out of here to the lungs. 5/9 13. Recieves deoxygenated blood into the heart. 5/6