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Across 1. Cardiac muscle tissue 5. a procedure to help open clogged vessels 12. left heart 15. type of node that sends the electrical impluse; pacemaker 18. small fibrous strands that connect the tricuspid valve to the papillary muscle 19. heart feels like it is racing 21. when the ventricles of the heart are unable to contract effectively 22. Double layer of fibrous tissue surrounding the heart 23. large veinous blood vessels which bring deoxygenated blood 24. takes blood away from left ventricle to the body 25. Thick, muscular wall that seperates blood right and left

Down 1. an inflammation of the heart muscle 2. an inflammation of the membrane that lines the heart 3. upper chamber 4. branch that shoots an electrical impulse 6. severe chest pain 7. positioned between the right atrium and right ventricle. 8. divides into a right and left branch/atrioventricular bundle 9. tiny webbed stainless steel devices 10. right heart 11. located between the left atrium and left ventricle 13. type of node that carries an electrical impulse 14. caused by defects in the valves of the heart 16. an inflammation of the outer membrane covering the heart 17. slow heart rate 20. diffcult breathing