How are the lungs arranged?This question interests many people. We all know perfectly well that this organ is necessary for us to breathe and consume vital oxygen. However, how does all this happen? Hardly anyone can answer. Well, it is necessary to understand this.
So, explaining how the lungs are arranged is the firstdeed to tell about the implementation of the respiratory process. The air first enters the nasal cavity (through the nostrils), where it is heated to the required temperature and cleared of dust and other particles. Then he finds himself in the larynx. It is a cavity surrounded on both sides by vocal cords. Then the air goes through the trachea, the bronchi and then it goes directly to the lungs.
Well, here, in principle, how the lungs are arranged. Separately, they can be considered as an organ, of course, but it is not without reason that they enter the single respiratory system, in which they are the main component.
And now directly about how thelungs. They are in the chest cavity, in close proximity to the heart. To be precise, on either side of it. Both the heart and lungs are protected by the sternum and ribs, that is, the chest. Below is the aperture. This is the name of the special muscular septum, which has the form of a dome. It is she who separates the thoracic cavity from the abdominal cavity.
But that we had a full-fledged opportunityTo breathe, a larger volume of the thorax is needed. To do this, the respiratory muscles are designed, which are located between the ribs. They move apart at the moment when the diaphragm is lowered. Thus, air enters the lungs. And when a person exhales, the diaphragm returns to its usual state, like the ribs that press the lungs. This is how the air is pushed back.
The light outer ones are similar to the cone withdownward-directed base. Each organ is covered with a pleura consisting of 2 layers. Between them, by the way, there is little fluid. All this structure is a kind of protection of the lungs.
Now it is worth to talk in more detail about howthe lungs of man are arranged. So, their main are the bronchi, which with their branches are similar to a tree. Such a form is not just for them. Bronchi are a "skeleton" for pulmonary soft tissues. Because of this specific species they are called a bronchial tree.
If we talk about how the lungs are arranged, briefly,then we can say: there are only two of them, and each is divided into shares. There are two in the left lung, and three in the right lung. The shares are also divided into small cells. They are really miniature - no more than 25 mm in length and 15 mm in width. The bronchi are divided into bronchioles, which, in turn, consist of alveoli. These are tiny “pouches”. Their structure is connective tissue and fibers that have the ability to shrink and stretch. A lot of components, as you can see. By the way, in both lungs there are about 800 million (!) Of the notorious alveoli. It is into them that the air that a person inhales gets. But before that, he will go a long way through all the components that were described above. Through the alveoli, oxygen is in the blood. And then the reverse process begins - the release of carbon dioxide from the lungs.
