Across
- 4. Valve that functions to flow blood from the atrium to the ventricle during systole
- 6. The smallest blood vessels
- 8. Simple squamous layer that lines the inside of the heart
- 9. Hole in the heart when a human is still in the fetus
- 11. The inner layer of arteries and veins
- 13. The valve located between the left atrium and the left ventricle
- 15. A tool used to measure blood pressure
- 16. Another name for the chambers of the heart
- 17. The largest artery
- 18. Circulation of blood from the heart to the lungs back to the heart
- 19. The atrioventricular valve on the right side of the heart
Down
- 1. An organ that functions as a blood pump throughout the body
- 2. A tool for measuring heart rate
- 3. Blood circulation from the heart to the digestive organs back to the heart
- 5. The blood that comes out of the lungs to the heart contains many elements
- 7. Another name for the atrium in the heart chamber
- 10. Blood vessels that carry blood to the outside of the heart
- 12. Blood vessels found between the arteries and veins
- 14. Blood pressure when the ventricles relax
- 16. Blood vessels that carry blood to the heart