500 Billion years
Blood goes to the lungs oxygen poor and comes out of the lungs oxygen rich.
lungs
oxygenated blood
the blood goes to the pulmonary artery and then goes into the lungs.
Lungs contain lots of blood. Blood goes to the lungs to pick up oxygen.
oxygen.
in a fetus blood does not reach the lungs for purification. In a baby blood goes to the lungs for oxygenation.
Blood from all parts of the body except the lungs goes to the vena cava. Blood vessels that carry blood towards the heart are veins.
it goes to the lungs
you breath it in and the air goes into your lungs and helps pump the blood around
Oxygen goes from the lungs to the tissues via the blood stream and CO2 goes back to the lungs via the blood stream
oxygen rich blood