Circulatory System Crossword

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Across
  1. 3. The biggest veins in the body, one inferior that takes all blood from the lower body and one superior that takes all blood from the upper body and delivers it to the right atrium in the heart.
  2. 5. Organs in the body where the gas exchange of the drop off of carbon dioxide and the pickup of oxygen occurs.
  3. 7. ____________ blood is filled with oxygen and depleted of carbon dioxide.
  4. 8. Blood Vessels that return blood back to the heart from the body. These are thin-walled, under lower pressure and contain valves to aid in one-way blood flow. These usually contain oxygen-poor blood.
  5. 9. Tough, protective membrane surrounding the heart.
  6. 12. Distended veins that are caused by valve damage, this can be cause by compression of veins, it could be genetic or long periods of standing.
  7. 15. Atrium Chamber in the heart that receives oxygen-rich blood from the pulmonary veins, and passes it to the left ventricle.
  8. 16. The only veins in the body that carry oxygen-rich blood. They take blood from the lungs and delivers it to the left atrium.
  9. 17. ____________ blood is depleted of oxygen and filled with carbon dioxide.
  10. 19. The result of a person feeling an artery expand with each beat of the heart.
  11. 23. Blood Vessels that carry blood away from the heart. They are thick-walled and can withstand very high pressure due to heart violently forcing blood through. These usually carry oxygen-rich blood.
  12. 24. The biggest artery in the body that all other arteries(except pulmonary) branch off of. It receives oxygen-rich blood from the left ventricle. It forms an aortic arch and then descends down the body.
  13. 27. Circulation of blood that carries it from the heart to all parts of the body and back.
  14. 28. Chamber in the heart that receives oxygen-poor blood from the right atrium and forces it through the pulmonary artery.
  15. 30. Structures that prevent blood from flowing back into the atria.
  16. 32. The narrowing of blood vessels due to a build up of fat deposits. Can cause heart attack or stroke if completely blocked.
  17. 34. Circuit of structures that uses pulmonary veins/artery to deliver blood from the heart to the lungs and back.
Down
  1. 1. A dangerous bulge in the wall of an artery that can rupture, causing cells to not get their nutrients.
  2. 2. These are cause by broken capillaries under the skin.
  3. 4. Process that causes blushing in the face and increases blood flow due to the widening of blood vessels.
  4. 6. Blood Vessels that are one cell thick to allow exchange of gases, nutrients and wastes that touch every cell in the body.
  5. 10. Blood vessels that arteries divide into that carry blood away from the heart.
  6. 11. Structures in the heart that prevent blood from flowing back into the ventricles.
  7. 13. Blood vessels that veins divide into that carry blood towards the heart.
  8. 14. A very thick, muscular wall that separates the heart. This prevents the mix of oxygen-poor and oxygen-rich blood.
  9. 18. Chamber in heart that receives oxygen-poor blood from either the inferior or superior vena cava.
  10. 20. The only artery in the body that carries oxygen-poor blood. It receives the blood from the right atrium and delivers it to the lungs.
  11. 21. Chamber in the heart that sends oxygen-rich blood through the aorta to the rest of the body.
  12. 22. The narrowing of blood vessels that cause paleness, decreasing blood flow to prevent heat from escaping the body.
  13. 25. A 'Double-Pump' that controls circulation throughout the body.
  14. 26. A system that delivers nutrients to cells as well as takes wastes away from cells to be excreted. This system also distributes heat as well as protects the body from infection.
  15. 29. Structures in veins that prevent blood from flowing backwards.
  16. 31. Fluid in body that travels through vessels to deliver nutrients and take wastes from cells, as well as protects against invaders and distributes heat to body.
  17. 33. Where the gas exchange of the drop off of oxygen and pickup of carbon dioxide takes place.