Lungs

The lungs are located in the two halves of your chest, part of your respiratory system, and they are made of epithelial and smooth muscle cells. These twins are two air bags that grab and store all the oxygen you will ever use in your life and remove all the carbon dioxide your body will make in your life. They are connected through a system of tubes that make them one organ, and they are the 4th largest organ in your body, weighing in at 1 kilogram (2.2 pounds). You have two lungs: your left lung and your right lung (which is slightly larger than your left lung because your pesky heart takes space from the left lung), and you can probably figure out how they got their names. Both of these lungs have a protective layer around them made from a special type of tissue known as pleural tissue. Whenever you breathe, which by the way, if you are a normal human, you breathe up to 20 times a minute, a muscle connected to your lungs, the diaphragm, pulls down, letting air through the back of your throat, past your voice box, and into your trachea, which common people call your windpipe. From there, the trachea splits into two tubes called bronchial tubes (each tube leads to a different lungs) that split into increasingly smaller tubes going down your body, eventually ending at fruit-shaped air sacs called alveoli. Then, the oxygen is sent to your heart to reoxygenate your blood. However, when your cells use this oxygen for cellular respiration, they generate carbon dioxide, which the body needs to get rid of. Contraction of the diaphragm can send this unwanted junk back the world. This is how you breathe and how the lungs work.

Also, never try smoking or vaping if you haven't already tried it. It is like setting fire to your lungs and can cause a variety of diseases.