Across
- 5. two largest veins in the body
- 6. vein that carries oxygenated blood from the lungs to the heart
- 9. fluid tissue responsible for transporting oxygen and nutrients in the body
- 12. machine that can measure the heart's electrical wave movements
- 15. major arteries that carry blood upward to the head
- 16. this node is one of the nodes that controls electrical impulses of the conduction system
- 18. smallest blood vessels in the body
- 19. fibers that relay electrical impulses to the ventricles causing them to contract
Down
- 1. this circulation does not involve the flow of blood between the heart and lungs
- 2. node responsible for establishing the rhythm and rate of the heartbeat
- 3. blood vessels that have valves
- 4. name of this valve means bishop's hat
- 7. middle, thickest layer of the heart
- 8. also known as the pericardial sac
- 10. the name of the upper chambers of the heart
- 11. this complex shows the contraction of the ventricles
- 13. within an artery
- 14. largest blood vessel in the body
- 17. means relating to the veins