通过猪肺实地解剖展示猪各个肺叶的支气管、肺动脉和肺静脉的解剖特征，为猪肺叶切除术的动物实验提供参考。

取1例心肺连体的成年猪心肺器官，观察猪肺叶，进一步在肺叶水平对该猪肺进行实地解剖，观察肺叶水平的支气管、肺动脉和肺静脉的解剖特征。

猪肺分为左肺和右肺。猪左肺有3叶，分别为尖叶、心叶和膈叶，其中左尖叶和左心叶叶间裂融合，形成类似于人左肺上叶和左肺下叶的2肺叶构成方式；猪右肺有4叶，分别为尖叶、心叶、膈叶和副叶。每个肺叶均有独立的支气管、肺动脉和肺静脉；左尖叶和左心叶支气管共干，该共干类似于人左肺上叶支气管；左肺尖叶有2支肺动脉分支入肺，左膈叶和右肺各叶均只有一支肺动脉入肺；右副叶有2支肺静脉，其中一支副叶肺静脉与膈叶肺静脉根部汇合后进入心包内，其余肺叶均只有一支肺静脉。

猪肺的肺叶解剖标识清晰，支气管、肺动脉和肺静脉的解剖特征与人体肺叶解剖具有相似性，可作为肺叶切除术的动物模型，熟悉猪肺解剖有助于顺利开展相关实验和研究。

To display the anatomy of swine lung lobes, especially the characteristics of bronchus, pulmonary arteries and pulmonary veins of each lung lobe, in order to provide reference for animal experiments of lobectomy.

The heart and lung organs of an adult pig were extracted to observe the structure of the lung lobes. Further, the lung of the pig was dissected at the level of lung lobes to observe the anatomical characteristics of the bronchus, pulmonary arteries and pulmonary veins.

Swine lungs are divided into left and right lungs. The left lung has 3 lobes, namely apical lobe, cardial lobe and diaphragmatic lobe, in which the left apical lobe and left cardial lobe are fused. The right lung has 4 lobes, namely apical lobe, cardial lobe, diaphragmatic lobe and accessory lobe. Each lobe has independent bronchus, pulmonary artery and pulmonary vein. The left apical lobe and left cardial lobe bronchus are co-stem, which is similar to the human left upper lobe bronchus. Two pulmonary arteries branch into the left apical lobe, and only one pulmonary artery branch into the left diaphragmatic lobe and each lobe of the right lung. There are two pulmonary veins in the right accessory lobe. One of the accessory pulmonary veins joins at the root of the pulmonary veins in the diaphragmatic lobe and enters the pericardium, while any of other pulmonary lobes has only one pulmonary vein.

The anatomical characteristics of bronchus, pulmonary arteries and pulmonary veins of swine lung are similar to those of human lung, and can be used as an animal model for lobectomy. Familiarity with the anatomy of swine lung is helpful to carry out relevant experiments and studies.