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Science organs and functions of human body

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heart
pumps blood throughout the body
ventricle
pumps blood out of the heart
Atrium
Receives blood coming into the heart
Valve
Prevents blood from flowing backwards opens and closes making the lub-dub noises
Artery
carries blood away from the heart and to the lungs and other body parts
Veins
carries blood back to the heart from the lungs of the body
capillary
allows materials to be exhanged between the blood and the body parts
red blood cell
carries O and CO2 to and from the heart and lungs and body parts
white blood cells
fights diseases
platelets
form blood clots to stop bleeding