when pressure inside the lungs is lower then outer atmosphere
Pulmonary just means lung..... So from the lung it gets pumped back into the heart and then around the body
Blood goes to the lungs oxygen poor and comes out of the lungs oxygen rich.
lungs
Tethnically neither direction. All oxygenated blood goes from the lungs back to the Heart via the Pulmonary vein, where it gets pumped to the body, while the deoxygenated blood goes into the heart via the Vena Cava to be Pumped to the lungs for gas exchange. :)
Yes, blood leaving the lungs via the pulmonary veins goes into the left atrium.
lungs
oxygen.
You breath.
Lungs contain lots of blood. Blood goes to the lungs to pick up oxygen.
cigarettes have tar in them that goes into your lungs which is toxic to your lungs and since it doesn't go anywhere it causes disease in your lungs.
Carbon dioxide, Waste product, goes from the cell to the lungs. So the question is lung to the cell, not positive, but oxygen.
Start in the superior and inferior vena-cava, moves to the right atrium, goes through the tricuspid valve to the right ventricle. The blood then goes through the pulmonary semi-lunar valve to the pulmonary artery (which contains oxygen poor blood). This then goes to the lungs where the oxygen poor blood is oxygenated and comes back to the heart via the pulmonary vein (which contains oxygen rich blood).