1					2		3		4
			5				6
							7						8
9											10
													11
	12

Across 3. This valve prevents backflow into the left ventricle 6. This recieves blood from the vena cava 9. This valve prevents backflow into the right ventricle 11. This blood vessel carries oxygenated blood 12. This blood vessel carries deoxygenated blood

Down 1. This valve is between the left atrium and ventricle 2. This artery has deoxygenated blood pumped through it 4. This pumps deoxygenated blood to the lungs 5. This vein pumps oxygenated blood to the left atrium 7. This valve is between the right atrium and ventricle 8. This recieves blood from the pulmonary veins 10. This pumps oxygnated around the body