Across
- 5. Valve between the left atrium and the left ventricle; bicuspid valve
- 6. Muscular middle layer of the heart
- 12. Specialized tissue in the wall between the atria
- 14. Abnormal swishing sound caused by improper closure of the heart valves
- 15. Two common carotid arteries located on each side of the neck branch from the aorta and provide blood to head, neck and brain
- 16. Beat of the heart as felt through the walls of the arteries
Down
- 1. Inner lining of the heart
- 2. Located between the right atrium and the right ventricle
- 3. Instrument to measure blood pressure
- 4. Specialized nervous tissue in the right atrium that begins the heartbeat
- 7. Partition or wall dividing a cavity
- 8. Structure in veins or in the heart that temporarily closes an opening so that blood flows in only one direction
- 9. Small vein
- 10. One of two upper chambers of the heart
- 11. Smallest type of blood vessel. Materials pass to and from the bloodstream through the thin capillary walls
- 13. Relaxation phase of the heartbeat