Lung is the respiratory organ of human body, and it is also an important hematopoietic organ of human body. It is located in the chest, one on the left and one on the right, covering the heart.
The lungs are divided into leaves, two on the left, three on the right and five on the * *. The lung is connected with the throat and nose through the lung system, so the throat is called the portal of the lung and the nose is the outlet of the lung.
Inhale oxygen from the outside air, make oxygen enter the blood in the lungs, and then transport it to all parts of the body for use. On the other hand, carbon dioxide in lung blood permeates into bubbles and then is excreted.
The human lung is located in the middle of the chest. * * * There are five lobes, the right lung is wide and short, with three lobes, and the left lung is narrow and long with two lobes. The left leaf is divided into upper leaf and lower leaf by oblique fissure, and the right leaf is divided into upper leaf, middle leaf and lower leaf by transverse fissure, in which the right middle leaf is smaller than the other four leaves. There are organs such as heart, great blood vessels, trachea and esophagus between the two lungs. The lower part of the lung is separated from the abdominal organs by the diaphragm.
There is serosa outside the lung, which is smooth and moist. The lungs are soft and elastic, contain air and are spongy. The color of the lungs varies with age and occupation, and the lungs of newborns are red; Adults are dark gray with black spots due to continuous inhalation of smoke and deposition in the lungs; Older people are darker.
The lung is mainly composed of bronchi, bronchioles, alveolar ducts and alveoli. Located in the chest cavity, the left and right lungs are connected to the trachea through the left and right bronchi, and there is a thin pleura between the lungs and the muscle layer of the chest wall.
Interpretation of ancient books:
Guang Yun, Ji Yun, Yun Hui, Fang Fei, Yin Fei? . Shuo Cang also. Jade Piece is full of lung words. "Zhengzitong" has six lobes and two ears, all of which are eight lobes. The third vertebra is attached to the spine, which matches the middle of scrotum and the inside and outside of the large intestine. It is a yang cymbal and communicates with autumn air. "Su Wen" is right in Longzhong. According to legend, how does the official treat this festival? "Ritual Quli" is not in the New Year, and imperial meals do not sacrifice the lungs. In the "Note" ceremony, eating and killing animals is the first sacrifice.
"Moon Order", the moon in Xia Meng, sacrifices the lungs first. The Historical Records of Le Shu is about moving the lungs, harmony and justice. Huainanzi Spiritual Practice refers to the lung as qi. Shi Ming's lung, yes. Talk about it? Yu Ye. "Boya" lung, fee also.