Cardiovascular System Crossword

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Across
  1. 2. the outermost layer of the heart
  2. 4. carries _________ and nutrients to the cell
  3. 7. blood vessels that carry blood away from the heart
  4. 8. the innermost layer of the heart that provides a smooth surface for blood flow
  5. 9. this cavity is where the heart is located
  6. 12. tiny blood vessels where oxygen and carbon dioxide are exchanged between the body and the blood cells
  7. 13. blood vessels that bring blood back to the heart
Down
  1. 1. the major organ of the cardiovascular system
  2. 3. the thickest layer of the heart responsible for contracting the heart
  3. 5. A protective layer of tissue that covers the heart
  4. 6. the rounded point of the heart
  5. 10. a word that refers to the heart
  6. 11. the widest part of the heart