cardiovascular anatomy

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Across
  1. 2. NODE – The natural pacemaker of the heart.
  2. 7. – The middle layer of a blood vessel wall.
  3. 9. – The outermost covering of the heart.
  4. 10. – The largest artery in the human body.
Down
  1. 1. – A small vessel that collects blood from capillaries and joins veins.
  2. 3. – Valve that opens from the left ventricle into the major artery.
  3. 4. – The upper chambers of the heart.
  4. 5. – Valve between the left atrium and left ventricle.
  5. 6. – Arteries that supply blood to the heart muscle.
  6. 8. – The wall dividing the left and right sides of the heart.