Across
- 1. One of two upper chambers of the heart.
- 2. Largest type of blood vessel; carries blood away from the heart to all parts of the body.
- 3. Gas (waste) released by body cells, transported via veins to the heart
- 5. Lower tip of the heart.
- 9. Two common carotid arteries located on each side of the neck branch from the aorta and provide blood to head, neck and brain
- 11. Blood vessels that branch from the aorta and carry oxygen-rich blood to the heart muscle.
- 12. Innermost lining of blood vessels.
- 14. Smallest type of blood vessel.
Down
- 1. Largest artery in the body.
- 4. Relaxation phase of the heartbeat. (From Greek diastole, dilation)
- 6. Inner lining of the heart.
- 7. Valve between the left atrium and the left ventricle; bicuspid valve.
- 8. Muscular middle layer of the heart.
- 10. Small artery
- 13. Record of the electrical activity of the heart. The electricity is represented by waves or defl ections called P, QRS, or T.