Now, superior simply means it's found above, and inferior means it's found below. And that's exactly why these two are referred to as a superior and these two lobes are referred to as our inferior lobes. So we see that our two lungs are found within our thorax, within our thoracic cavity, and below our lungs. As we'll see in just a moment, there's a special type of skeletal muscle known as our diaphragm. And the diaphragm separates our lungs from the stomach and the small intestine, and it also functions in the process of respiration. Now, let's actually discuss the way that our air moves into our lungs via this passageway system that we have that connects between our nose and our lungs.