i don't know. is that the best answer in the world! haha YES IT'S dumb but check wikipedia thay should have here I'll check just click on this http://en.wikipedia.org/wiki/Human_lung or copy and paste it should be blue or something if not just copy and paste i didn't read the artcle yet if your Q is not there it should be updated soon.
Typically carbon dioxide doesn't come from the lungs, it goes to them and gets exhaled. However, I suppose you could inhale some carbon dioxide in which case it might diffuse into the blood and go around your body. Not really super harmful unless you inhale a lot (after all your cells naturally produce carbon dioxide through cellular respiration, which of course then travels to the aveoli and gets exhaled).
Diffusion.
Diffusion.
Diffusion.
Diffusion.
The carbon dioxide is exhaled.
carbon dioxide has to be breathed out because it can be harnful to the lungs
The lungs remove carbon dioxide from the bloodstream. As blood circulates through the lungs, carbon dioxide diffuses from the blood into the lungs to be exhaled out of the body.
Oxygen is breathed in and carbon dioxide is breathed out as it is deadly to humans. Too much carbon dioxide breathed in will cause brain damage and eventually death.
The gas that passes from the bloodstream into the lungs is called carbon dioxide. Carbon dioxide is transported from the tissues to the lungs via the bloodstream, where it is exhaled out of the body during respiration.
lungs .
The gas that is being referred to is carbon dioxide which is a waste product of cellular respiration. In the respiratory system carbon dioxide is removed from the body as it is breathed out. This is done by the exchange of oxygen and carbon dioxide between the lungs and bloodstream. Oxygen is inhaled in enters the bloodstream and is then distributed throughout the body. At the same time carbon dioxide is breathed out which is produced as a waste product of cellular respiration.
It is breathed out of the body by the lungs