Circulatory System

3. a substance that prohibits the coagulation of blood.
4. type of white blood cell.
6. the membranous sac that covers the heart.
9. fatty degeneration of the walls of the arteries.
10. a combination of glycerol and fatty acids in the blood.
12. inflammation of a vein associated with the formation of a blood clot.
14. any deviation from the normal electrical rhythm of the heart
15. the serous membrane lining of the heart.
19. valve located in the right side of the heart, between the right atrium and the right ventricle
21. contraction phase of the heart the greatest amount of blood pressure.
22. the 10th cranial nerve that has both motor and sensory function, affecting the heart, stomach, and other organs.
23. valve located in the heart, specifically between the left atrium and left ventricle
25. slow heart rate

1. relaxation phase of the heartbeat the period of least pressure.
2. protein and iron pigment in the red blood cells that attracts and carries oxygen in the body.
3. widening/weakening dilation of arterial walls.
5. quivering of muscle fibers ineffective rapid, but weak heart action.
7. a blood vessel carrying blood toward the heart after receiving it from a venule
8. a degeneration and hardening of the walls of arteries.
11. small blood vessels connecting arteries with capillaries.
13. the muscle layer of the heart.
16. the node beginning of the bundle of His in the right atrium; nerve fibers responsible for the contraction of the ventricle
17. SA node of the heart; also refers to an artificial device that initiates heartbeat.
18. any one of various structures for temporarily closing an opening or passageway or for allowing movement of fluid in one direction only.
20. a type of cell found in the blood that is required for clotting
21. valves of the heart located between the ventricles and the pulmonary artery and aorta
24. the main trunk of the arterial system of the body