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Across 4. Condition of hardening of the arteries. 8. Place where arterioles and venules join and the exchange of O2 and CO2 exchange. 10. Bld. vessels with 3 muscular walls, carry O2 rich bld. away from the heart, and have a pulse. 12. Avoid using this when you take a pulse, unless you want to take your own pulse. 17. Another term meaning heart. 20. High Blood Pressure. 21. Is the only artery that deals with O2 poor blood. 22. Thrombocytes, allow for the clotting of the blood. 23. Outermost layer of the heart, fluid filled sac surrounding the heart that reduces friction. 25. Any traveling foreign material in the blood stream. 27. Myocardial Infarction, heart attack. 28. Blood protein that aids in the clotting of the blood. 31. Pulse site on the posterior knee area. 32. Erythrocytes, carry O2. 33. Atrium receives O2 rich blood. 34. Inflammation of a vein. 35. Top two pumping chambers of the heart. 40. Pulse site on the side of the neck. 41. Condition occurs mainly in males, inability of the blood to clot. 42. Inadequate number of RBC's or hemoglobin , or both. 43. Pulse site in the groin area. 44. The liquid portion of the blood. 45. Bld. vessels that carry O2 poor bld. back to the heart, and have valves .

Down 1. Pulse site on top of the foot. 2. Largest artery in the body, is the main arterial trunk of the arterial system. 3. Valve located between the L atrium and the L Ventricle. 5. Keep blood flowing in one direction, prevents back flow of blood. 6. Atrium receives O2 poor blood. 7. Apoplexy or stroke. 9. Pulse site on the side of the forehead. 11. Brief period of rest between heart contractions. 12. Blood clot. 13. Smallest arteries. 14. Innermost layer of the heart, allows smooth flow of blood through the heart and blood vessels. 15. Valve located between the R Atrium and R Ventricle. 16. The weakening or ballooning of an artery. 18. Pertaining to the heart. 19. Period during which the heart contracts. 20. Low Blood Pressure. 24. Gives blood its bright red color, carries O2. 26. Muscular wall in the heart that divides it into R and L sides. 29. Pulse site on the wrist, common site to take a pulse. 30. Leukocytes, fight infection. 35. Pulse is the most accurate pulse, is required to be taken on infant patients. 36. Middle layer of the heart, thick muscle layer that causes the heart to contract/beat. 37. Bottom two pumping chambers of the heart. 38. Treatment for Congestive Heart Failure (CHF). 39. Smallest veins.