YOUR HEART AND HOW IT WORKS: CROSSWORD PUZZLE

ACROSS:2. The valve between the left atrium and the left ventricle3. The heart is a ________6. Blood vessel which carries blood to the heart8. The heart is a little larger than your _______10. _______ refulate the flow of blood through the heart12. One function of the heart is to ______ blood to the lungs14. The tough, muscular wall of the heart16. Upper chamber of the heart17. From the right side of the heart blood goes to one of these18. Lining of the heart19. Waste gas: carbon _____20. Warning of a heart attack: pain may radiate down the ______21. Blood vessel which carries blood from the heart

DOWN:1. The valve between the left ventricle and the aorta4. The valve between the right ventricle and the pulmonary artery5. The heart pumps blood to all body _____6. Lower chamber of the heart7. Fibre-like bag surrounding the heart9. Wall which divides heart cavity down the middle11. The valve between the right atrium and the right ventricle13. The artery/vein connecting lungs and heart15. _____ is pumped through the body to nourish all of the tissues16. Great trunk artery which receives blood from the left ventricle