veins - Blood vessels that carry blood back to the heart., arteries - Blood vessels that carry blood away from your heart., atria (atrium) - The top chambers of your heart that receive blood from your body or lungs., ventricles - The large chambers at the bottom of your heart that pumps blood out to your lungs or body., aorta - The largest artery in your body., capillaries - Where oxygen and nutrients are dropped off, and carbon dioxide and wastes are picked up., red blood cells - Special cells that carry oxygen., white blood cells - Special cells that fight off germs and infections., plasma - The liquid part of your blood., platelets - Tiny cells that help stop bleeding., heart rate - How fast or slow your heart beats., pulse - How you feel your heart beat. ,

Circulatory System Memory Game

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