Across
- 3. valve between the left atrium and left ventricle
- 8. relationship between the heart and the thoracic cavity
- 9. a central wall, divides the heart into right and left sides
- 10. pulmonary veins carry this type of blood from the lungs to the left atrium
- 12. the pacemaker of the heart (controls the heart beat)
- 13. the largest artery in the body
- 14. valve between the right atrium and right ventricle
Down
- 1. small veins (or venules) combine to form this
- 2. smallest blood vessels in the body
- 4. contraction of the heart
- 5. arteries, capillaries, and veins
- 6. the resting period between contractions
- 7. valve between the right ventricle and pulmonary trunk
- 11. valve between the left ventricle and the aorta