Across
- 1. the middle and thickest layer of the heart
- 5. myocardium contracting
- 6. a measure of the amount of pressure flowing blood exerts on arterial walls
- 8. the number of times the ventricle contracts or beats in 1 minute
- 10. carry blood toward the heart
- 12. responsible for the movement of blood and everything it carries throughout the body
- 14. smallest branches of the arterial tree
Down
- 2. carry blood away from the heart
- 3. valves located between the atria and the ventricles
- 4. collagen fiber cords that are attached to the edge of each cusp and to papillary muscles
- 7. the outermost layer of the heart wall
- 9. brings deoxygenated blood from the systemic circulation
- 11. the innermost layer of the heart wall
- 13. myocardium relaxing