describe working of heart
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the heart is part of the respiratory and circulatory system.
First oxygen is inhaled by the lungs
then oxygen diffuses into the bloodstream
the oxygenated blood goes to the heart which then pumps it to the rest of the body
the oxygen diffuses into the body cells
carbon dioxide diffuses from body cells into the blood stream
the deoxygenated bloo
First oxygen is inhaled by the lungs
then oxygen diffuses into the bloodstream
the oxygenated blood goes to the heart which then pumps it to the rest of the body
the oxygen diffuses into the body cells
carbon dioxide diffuses from body cells into the blood stream
the deoxygenated bloo
quxxnhumaira:
the deoxygenated blood is transportede to the heart which pums it to the lungs
carbon dioxide diffuses to the lungs and is then exhaled
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