Circulatory System Crossword Puzzle
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QUESTIONS LIST:
- arteries : blood vessels that carry blood away from the heart
- cardiovascular : _ system consists of the heart, blood vessels, and blood
- veins : blood vessels that carry blood back to the heart
- pacemaker : a group of heart cells that sends out signals that make the heart muscle contract
- capillaries : place where substances are exchanged between the blood and body cells
- heart : hollow, muscular organ that pumps blood throughout the body
- aorta : largest artery in the body
- pulse : the alternating expansion and relaxation of the artery walls
- blood pressure : a force exerted by blood against the walls of blood vessels
- white : _ blood cells - the body's disease fighters
- valve : a flap of tissue that prevents blood from flowing backward
- ventricle : lower chambers of the heart
- red : _ blood cells - take up oxygen in the blood and deliver it to cells elsewhere in the body
- plasma : the liquid part of blood
- atrium : upper chambers of the heart
- hemoglobin : iron-containing protein that binds chemically to oxygen molecules
- diffusion : the process by which molecules move from an area of higher concentration to an area of lower concentration
