A pinched nerve is an injury to a nerve or group of nerves resulting from compression, entrapment or stretching. Numbness, tingling, burning or pain can result. In some cases, muscle weakness can also occur. Symptoms of a pinched nerve may develop gradually or can come on suddenly. Nerves can be compressed as they leave the spine; when they pass over bony prominences, through muscles, or under ligaments; or as a result of trauma.
Lungs, Lungs Diseases, Functions of Lungs. Lungs are the major organ of our respiratory system, helping us obtain oxygen and get rid of carbon dioxide. Our chest cavity houses a pair of lungs which open to the external environment through the nose and mouth. A cylindrical tube, called trachea, is the main link between the lungs and the nose and mouth.
The main organ of the respiratory system is the lungs. The diaphragm is a muscle located underneath the heart and lungs that contracts to pull air into the lungs and relaxes to force air out of the lungs. When the air enters the lungs, it travels through the bronchi to tiny air sacs called alveoli.he main organ of the respiratory system is the lungs. The diaphragm is a muscle located underneath the heart and lungs that contracts to pull air into the lungs and relaxes to force air out of the lungs. When the air enters the lungs, it travels through the bronchi to tiny air sacs called alveoli.