Presentation on theme: "Gross anatomy of lungs/pleura and mediastinum-1"— Presentation transcript:
1 Gross anatomy of lungs/pleura and mediastinum-1 ByProf. Dr. AnsariChairperson & Prof. AnatomyRAKCODS.
2 The pleura is a serous membrane That covers the lungs.There are two layers of pleurae.Parietal layer lines the thoracic wall, it is pain sensitive.Visceral layer is pain insensitive, it lines the surfaces of lungs, at hilum it forms pulmonary ligament around the hilum of lungs.The space between the two layers is filled with pleural fluid.
4 The mediastinum It is a median septum/space between the two lungs. The mediastinum is divided by an imaginary plane passing through the sternal angle, into superior mediastinum and inferior mediastinum.The inferior is further divided into anterior, middle and posterior mediastinum.The heart and pericardium lies in the middle mediastinum.
5 The lungs are respiratory organs Situated in the thoracic cavity, the trachea divides at the level of sternal angle into primary bronchi that enters the hilum.Right lung is having 3 lobes, horizontal and oblique fissures.Left lung is having two lobes, with oblique fissure, lingula is a part of superior lobe anteriorly, a tongue like extension.
8 Each lung has An apex A base Medial surface/mediastinal surface having hilumSternocostal surfaceAnd diaphragmatic surface
9 Structures in the hilum of lung Primary bronchusPulmonary arteryPulmonary veinsLymph nodesBronchial vesselsPulmonary plexus
10 Left lung hilum 1. Apex of lung 2. pulmonary vein 3. cardiac impression4. pulmonary ligament5.lingula segment of superior lobe of left lung6. diaphragmatic surface7.aortic impression8.pulmonary arteries9. primary bronchus10.oblique fissure