Cardiovascular System

3. Valves that prevent blood that has left the heart from back-washing.
7. The pacemaker node.
8. A chamber of the heart that fills while the ventricles are contracting.
12. A grain enjoyed by the aristocratic moose
14. An important artery in the neck.
16. A big eater
17. An important component of the heme pigment.
18. Vessels that carry blood into the heart.
20. THe pressure in the major arteries when the ventricles are contracting.
21. A cellular component of the blood that contains thromboplastin
22. The sound made when the semilunar valves snap shut.
23. The largest vein in the body.
25. The strongest continuously working muscle in the body.
29. An important Canadian animal with an extra large heart for alpine skiing.
30. A measurement of the electrochemical abilities of the heart's nodes.
33. A fluid that is found in lymph vessels.
34. A region of the central nervous system that controls heart rate and blood pressure.
36. THe artery that supplies the myocardium with the blood that it needs in order to work.
37. Blood pressure reading of 145/100 indicates____.
38. Occurs when a heart valve does not close completely.

1. A condition that is characterized with a low hemoglobin or RBC count.
2. An inferior chamber of the heart with superior strength.
4. Muscular vessel that always carries blood away from the heart
5. A special protein and pigment combination that transports gases with the RBC
6. An important nutrient in plasma.
8. The largest artery in the body
9. The valve on the left named after the bishop's hat.
10. The valves between the atria and ventricles of the heart are ________ valves.
11. The pressure in major arteries while the ventricles of the heart are relaxed
13. Tiny vessels with a single layer and thin walls.
15. The pressure in the capillaries that forces water to move from the tissues into the capillaries.
18. Veins have them
19. A plasma protein that is needed for clotting.
24. Small vessels with low blood pressure that branch off of the arteries.
26. An important inactive plasma protein involved in blood clotting.
27. _____ Circulation involving the heart and the lungs.
28. A special tissue in cardiac muscle that is able to generate an electrochemical impulse.
31. THe vale in the fetal heart that seals after birth is the foramen _____________.
32. The fluid that the cellular components of the blood circulate in.
35. Heart Muscle