It needs to get oxygen from the lungs, or drop off carbon dioxide to exhaled out of the body.
blood is pumped through lungs
it is pumped to the heart first then to the lungs
When blood is pumped into the thin-walled blood vessels of the lungs, carbon dioxide is replaced with oxygen.
Lungs
When blood is pumped into the thin-walled blood vessels of the lungs, carbon dioxide is replaced with oxygen.
When blood is pumped into the thin-walled blood vessels of the lungs, carbon dioxide is replaced with oxygen.
it is pumped out of the lungs
Oxygen
Oxygen
Carbon dioxide is at high levels and oxygen at low levels in blood that is being pumped from the heart to the lungs.
To remove CO2 and to replenish the O2 in the blood.
Blood is pumped into the lungs and the blood is oxygenated when oxygen is taken into the lungs