The respiratory tract is all the body parts that help you breathe. It is the path for air to move in and out of your body.
It includes the nose, throat, windpipe, and lungs. Air goes in through the nose, then down the windpipe to the lungs. In the lungs, oxygen goes into the blood and carbon dioxide leaves the body when you breathe out.
It includes the nose, throat, windpipe, and lungs. Air goes in through the nose, then down the windpipe to the lungs. In the lungs, oxygen goes into the blood and carbon dioxide leaves the body when you breathe out.