cardiovascular anatomy

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Across
  1. 2. Two lower chambers which discharge blood
  2. 3. Protective layer consists mostly of connective tissue and forms the innermost layer of pericardium
  3. 5. strong, muscular, and stretchy blood vessel, which helps push blood through the circulatory system
  4. 7. Muscular tissue of heart name
  5. 9. This valve is between the right atrium and right ventricle?
  6. 10. This valve is between the right ventricle and the pulmonary artery
  7. 11. They increase in size as they get closer to the heart.
Down
  1. 1. hey have very thin walls, which allow them to exchange compounds such as carbon dioxide, water, oxygen, waste, and nutrients with surrounding tissues
  2. 4. Two upper chambers which receive blood
  3. 6. This tissue lines the inside of the heart and protect the valves & chambers
  4. 8. Thin protective coating that surround the other part