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science

Across
cells that control the beat of the heart
the force of blood flow in a vessel
Another name for the heart system
the left branch of the aorta
a wall between the chambers of the heart
a blood vessel that carries blood to the heart
A tube that connects to the heart and has blood in it
Down
blood vessels that take deoxygenated blood to the lungs
A flap of tissue to prevent backflow in the body
the lower chambers of the heart
The upper chamber of the heart
a flap of tissue between the left atrium and the left ventricle
blood vessels that deliver oxygen to the heart
The biggest type of a blood vessel
largest artery in your body