Across
- 3. smaller branches of veins
- 7. muscle tissue that is only found in one organ of the body
- 8. contraction of the smooth muscle in blood vessels, retains heat
- 13. inner layer of blood vessels
- 15. largest artery, carries oxygenated blood
- 16. muscle tissue that doesn't have any striations or disks
- 18. smaller branches of arteries that go into capillaries
- 19. atria is filling with blood, longest phase of cardiac cycle
- 20. muscular organ for pumping blood
- 21. blood vessel that carries blood away from the heart
- 22. blood vessel that carries blood towards the heart
Down
- 1. where gas exchange occurs
- 2. circulation of deoxygenated blood from the heart to the lungs to get oxygenated before it goes back to the heart
- 4. ultrasound test that allows for pictures of the heart
- 5. shortest phase of the cardiac cycle
- 6. relaxed tunica media to dissipate heat
- 9. receives blood as it returns to the heart to complete the cycle
- 10. layer of blood vessels that is made up of connective tissue
- 11. the hearts natural pacemaker
- 12. pulse taken at artery in the neck
- 14. consistent high heart rate
- 17. pump blood out of the body to start a new cycle