The lung is located in the thoracic cavity and is divided into left lung and right lung. Generally, the left lung is divided into two lobes and the right lung is divided into three lobes. The lungs are connected to the throat and trachea. The upper part is the clavicle, the lower part is the diaphragm, and the lower part is the abdominal cavity. The heart is located between the lungs. The lungs are very fragile. Overexertion, infection, cold, inhaling too much irritating gas and dust, etc. may damage the lungs, causing cough, expectoration, rough breath and other symptoms. Therefore, it is necessary to take extra care, work and rest together, avoid overwork, try not to smoke, and keep away from dust. In addition, proper physical exercise can strengthen the physique and improve the resistance. If the lung is abnormal, various diseases of the lung can be checked through chest CT and chest X-ray.
