All the muscles of the body, the muscles of breathing are the only ones for which we have dual control, ie, they can automatically and voluntarily. In healthy people, breathing, and output is done automatically, but if necessary we can control. We, for example, to avoid inhaling smoke and vapor, singing, swimming, or in the underwater world.
How to breathe
Respiratory system consists of the intermediate ribs and pectoral muscles, diaphragm - sheet of muscle between the chest and abdomen - and the respiratory tract, including respiratory tract and lungs.
When we breathe, the muscles of the chest connecting the ribs contract, pull the ribs up and out. The diaphragm pulls the chest cavity, and together these two processes cause the lungs to expand. In the cold air is drawn through the nose, where it is heated and then to the lungs. If the air is quite successful (ie, inspiration), the diaphragm and the muscles relax and the exhaled air is compressed and the lungs (also known as expiration). Then, the diaphragm and then the cycle begins again.
As the air through the nose between the trachea (windpipe) and bronchi, small airways caused by the individual small bronchi lung.These Over time, the form of the bronchioles end in tiny air SACs called alveoli. In the alveoli with blood capillaries, where exchange of oxygen and carbon dioxide very quickly.
On average we have about 12 breaths per minute, and that this body, in accordance with their needs at any given time. If this is too much carbon and too little oxygen, increase breathing and body shot, or breathe in the air. This may occur, for example, with vigorous activities, asthma attacks or anxiety. When the oxygen and carbon dioxide back to normal, breathing again in his normal rhythm of breathing.
When stressed, we breathe rapidly. Fast is a general response to stress, and this leads to tension in the muscles, and, possibly, dizziness, fainting, and feeling of pins and needles due to changes in the metabolism of the body. The reasons for the concentration of carbon dioxide in the alveoli in the lungs to decrease, resulting in the accumulation of alkali in the blood and tissue fluid. This alkalosis produces the above-mentioned symptoms.
When you breathe normally and efficiently we use our diaphragm, which contracts and will be flat, increasing the space in the chest where the lungs can expand. If the lungs are able to extend its full capacity, the waste carbon dioxide is allocated more oxygen, and can be inhaled. Many adults must learn to breathe because of the bad habits of life.
A variety of disorders - physical trauma, infections, viruses, allergies and disease - can damage and jeopardize the process of normal breathing.