Stop trying to cheat on your homework I am going to tell Mr. Andrade
Carbon dioxide is at high levels and oxygen at low levels in blood that is being pumped from the heart to the lungs.
blood that is being pump from the heart to the lungs is oxygen.
The atrioventricular valves prevent blood from being pumped back into the atria.
it is pumped out of the lungs
Blood is pumped out of heart. It comes back to the heart. This circle goes on.
systematic
The amount of blood never changes, the frequency increases, like heart rate.
blood is pumped around your body by your heart, that's why you hear your heart beating because it us pumping the blood around your body :)
it is pumped to the heart first then to the lungs
Deoxygenated, the blood has come from the rest of the body to the heart via veins, and is being pumped from the heart (hence being an artery) to the lungs to be oxygenated, and brought back to the heart through the pulmonary vein as oxygenated blood (to be pumped to the rest of the body again).
The blood absorbs oxygen from the lungs - enabling it to be transported throughout the body.
The blood is pumped out of the heart, when it is oxygenated, through the left atrium and left ventricle into the aorta.