Biology - What You Should Know About the Respiratory System

Biology - What You Should Know About the Respiratory SystemEverybody knows that biology has to do with the respiratory system. You've probably heard someone, a doctor, say something to the effect of 'We all have four lungs.' They're right, but what exactly does that mean?The word 'lungs' comes from Greek and means 'lily'. But that's not the origin of the word. Actually, it comes from the Greek word logos, which literally means 'a liquid'lily'. So in short, we can say that the lungs are air sacs where oxygen and other gases are breathed into.In the human body, air sacs are made up of tissues known as the pleura, which is Latin for 'shining skin'. Pleura is the skin covering the lungs. In fact, it's much like the rest of the respiratory system. Of course, this is only part of biology and you still need to know other parts, such as how the immune system works.In fact, the lung is actually divided into six parts: the alveoli, the trachea, the bronchi, the respiratory system, the accessor y lymph nodes, and the air sacs. That last item is important because it's the part of the respiratory system that gets oxygen from the blood. Because of this, we call it the air sacs. Our body must constantly get oxygen, so they must be continuously working to deliver it.The air sacs are where the dead and live cells are kept separate. The dead cells are the tiny cellular building blocks of our body. They act as nutrients, and once they are used up, they are flushed away from the body through the lymphatics. There is one small part in the air sacs that is always in motion, which is the air sacs.Inside of the air sacs, there are valves, which are keys to the smooth movement of those few living cells, the dead cells. There are also valves that keep the blood from being able to get back into the air sacs. Those valves and their proper functioning are important. If they are not working properly, for whatever reason, or if they malfunction, then death will occur, and everybody would know it, even if they didn't know it.Our bodies have some protection in the form of the alveoli. These are some structures in the surface of the lungs where air and other fluids can go in and out. And because these structures have other functions, such as exchanging fluids, and removing waste products, and respiring and breathing, they must be protected and kept healthy. If they aren't, there is a possibility that the fluids might become inflamed, which might cause damage to the lungs.These are all different parts of the respiratory system, but they all play a role in what happens to the air and the other fluids. Understanding all of them is important. And knowing biology is only half the battle.