Across
- 7. Largest artery in the body.
- 8. Blood vessels that branch from the aorta and carry oxygen-rich blood to the heart muscle.
- 12. Lower tip of the heart.
- 15. Gas (waste) released by body cells, transported via veins to the heart, and then to the lungs for exhalation.
Down
- 1. Located between the right atrium and the right ventricle; it has three (tri-) leaflets, or cusps.
- 2. Largest vein in the body. The superior and inferior venae cavae return blood to the right atrium of the heart.
- 3. One of two pairs of vessels carrying oxygenated blood from the lungs to the left atrium of the heart.
- 4. Valve positioned between the right ventricle and the pulmonary artery.
- 5. One of two lower chambers of the heart.
- 6. Beat of the heart as felt through the walls of the arteries.
- 9. Gas that enters the blood through the lungs and travels to the heart to be pumped via arteries to all body cells.
- 10. Small artery.
- 11. Smallest type of blood vessel. Materials pass to and from the bloodstream through the thin capillary walls.
- 13. One of two upper chambers of the heart.
- 14. Inner lining of the heart.