Heart disease and heart attacks | Miscellaneous | Heatlh & Medicine | Khan Academy
I think most of us know what the heart does in our body. It pumps the blood and in particular it takes in the blood from the rest of the body. That is blue...
I think most of us know what the heart does in our body. It pumps the blood and in particular it takes in the blood from the rest of the body. That is blue...
What is Blood Pressure?As blood circulatesthrough your body,it exerts pressure againstthe walls of your arteries. That pressure is whatis measured with ablood pressure device. Blood Pressure ismeasured by two numbers. The top number is...