Circulatory System

3. part of the body's immune system, they help the body fight infection and other diseases.
9. the buildup of fats, cholesterol and other substances in and on the artery walls
11. straw-colored liquid where the other components float in
13. a protein in red blood cells that carries oxygen.
14. the smallest blood vessels in your vascular system
17. small, colorless cell fragments in our blood that form clots and stop or prevent bleeding
18. occurs to increase the change or output: the result of a reaction is amplified to make it occur more quickly.
19. any of the blood vessels that carry oxygenated blood away from the heart to the body's cells, tissues, and organs.
20. measures the pressure in your arteries when your heart beats
21. weak spots in the walls of your arteries that expand.
22. universal blood type.
24. blood vessels located throughout your body that collect oxygen-poor blood and return it to your heart
25. a fluid tissue found in organisms with open circulatory systems

1. a spongy substance found in the center of the bones.
2. a small mass of specialized tissue located in the right upper chamber (atria) of the heart
4. measures the pressure in your arteries when your heart rests between beats.
5. contain the pigment hemoglobin, which imparts the red color to blood, and transport oxygen and carbon dioxide
6. atrial and ventricular chambers of the heart, or the connection or coordination between them.
7. (cardiovascular system) delivers nutrients and oxygen to all cells in the body.
8. a type of blood cell that is made in the bone marrow and found in the blood.
10. the effects of a reaction slow or stop that reaction.
12. connectors between your arteries and capillaries, they control your blood pressure and blood flow throughout your body.
15. is irregular or abnormal heartbeat
16. one of the two upper chambers in the heart that receives blood from the circulatory system
23. a very small vein, especially one collecting blood from the capillaries.