Across
- 4. relaxation phase of the heartbeat
- 5. beat of the heart as felt through the walls of the arteries
- 6. Blood vessels that branch from the aorta and carry oxygen-rich blood to the heart muscle. (2 words)
- 10. One of two lower chambers of the heart.
- 12. Small artery
- 13. One of two pairs of vessels carrying oxygenated blood from the lungs to the left atrium of the heart. (2 words)
- 17. Valve positioned between the right ventricle and pulmonary artery. (2 words)
- 18. Blood that is oxygen-poor (2 words)
- 19. Inner lining of the heart.
- 20. Thin-walled vessel that carries blood from body tissues and lungs back to the heart. They contain valves to prevent backflow of blood.
- 23. Artery carrying oxygen-poor blood from the heart to the lungs (2 words)
- 25. Gas (waste) released by body cells, transported via veins to the heart, and then to the lungs for exhalation. (2 words)
- 26. Flow of blood from body tissue to the heart and then from the heart back to body tissues. (2 words)
- 28. Smallest blood vessel. Materials pass to and form the bloodstream through the thin capillary walls.
- 29. Innermost lining of blood vessels
- 30. Largest vein the body. (2 words)
Down
- 1. Instrument to measure blood pressure
- 2. valve between the left atrium and the left ventricle; bicuspid valve (2 words)
- 3. Structure in veins or in the heart that temporarily closes an opening so that blood flows in only one direction. (2 words)
- 7. Located between the right atrium and the right ventricle; it has three (tri-) leaflets, or cusps.
- 8. Double-layered membrane surrounding the heart.
- 9. small vein
- 11. Largest artery in the body
- 14. Gas that enters the blood through the lung in travels to be pumped via arteries to all body cells.
- 15. Lower tip of the heart
- 16. Largest type of blood vessel; carries blood away from the heart to all parts of the body.
- 21. Flow of blood from the heart to the lungs and back to the heart (2 words)
- 22. One of two upper chambers of the heart
- 24. Record of the electricity flowing through the heart. The electricity is represented by waves or deflections called P, QRS, or T
- 27. Contraction phase of the heartbeat