Mostly arteries.
The alveoli and capillaries in the lungs pass oxygen to the blood. Both have very thin walls, which allow the oxygen to pass from the alveoli to the blood. The capillaries then connect to larger blood vessels, called veins, which bring the oxygenated blood from the lungs to the heart.
The lungs. Oxygen enters our lungs as part of the air that we breathe. It goes to the blood vessels deep in our lungs and then on to all parts of our body.
ravioli
The lungs have a large number of blood vessels because blood vessels carry oxygen to the lungs and the lungs need a lot of oxygen.Because it makes the transfer of oxygen from the lungs to the bloodstream quicker.
The energy broken down from the oxygen is transported into throughout the body by blood vessels. That energy is dropped of at what ever part of the body needs it, and the blood vessel goes back to the lungs for more.
When blood is pumped into the thin-walled blood vessels of the lungs, carbon dioxide is replaced with oxygen.
Human bodies take air into the lungs and remove oxygen from it (air is about 21% oxygen). In the alveoli (air sacs within the lungs) oxygen passes into the bloodstream where it is absorbed by the chemical hemoglobin in red blood cells. The oxygen is carried to all the cells of the body. The blood cells pick up carbon dioxide that the cells create when they oxidize food to get energy. This carbon dioxide is returned to the lungs, where it leaves the blood and is released from the body when you exhale.
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.
Oxygen is passed from the air to the blood through the process of diffusion in the alveoli of the lungs. The alveoli are surrounded by tiny blood vessels called capillaries, where oxygen diffuses into the bloodstream and carbon dioxide diffuses out of the bloodstream to be exhaled.
The heart and your blood vessels
carbon dioxide