into the skin
Blood goes to the lungs oxygen poor and comes out of the lungs oxygen rich.
oxygen.
You breath.
the oxygen goes to the air sacs inside of the lungs.
oxygen goes into your lungs and then co2 comes out when mixed with a substance in your lungs.
the oxygen in your blood comes from the air you breath in . It goes in through your mouth into the lungs and the oxygen gets taken out from the lungs into the cappilaries.
The mouth or nose inhales oxygen. Then the oxygen goes into the lungs.
The oxygen poor blood (not enough oxygen) goes to the lungs to get more oxygen to turn into oxygen rich blood (has plenty of oxygen)
Lungs contain lots of blood. Blood goes to the lungs to pick up oxygen.
A snake breathes through its nose, since they have lungs. Even fully aquatic species need to come up for air.
Oxygen moves into the lungs to the alveoli in the lungs into capillaries into pulmonary veins to the heart then to arteries that go through the rest of the body.
You breathe in and the oxygen goes into your lungs. Your blood picks up the oxygen and carries it to your muscles, and then goes into the cells in said muscles.