Across
- 4. structure in veins or in the heart that temporarily closes an opening so that blood flows only one direction
- 5. smooth layer of endothelial cells that lines the interior of the hear and heart valves
- 6. beat of the heart that is felt through the walls of the arteries
- 11. small artery
- 12. two lower chambers of the heart
- 13. upper chambers of the heart
- 14. valve between the left atrium and left ventricle
- 15. smallest type of blood vessel
Down
- 1. located between the right atrium and the right ventricle
- 2. largest artery in the body
- 3. partition dividing a cavity in the heart
- 4. thin-walled vessel the carries blood from the body tissues and lungs back to the heart
- 7. flow of blood from the body tissue to the heart and then from the heart back to body tissue
- 8. largest vein in the body with both a superior and inferior
- 9. largest type of blood vessel that carries blood away from the heart
- 10. double-layered membrane surrounding the heart