venous drainage in the lung
Azygos System
Arterial supply of the lungs
Aorta (post intercostal art) > Internal thoracic artery
Branches off subclavian > Anterior intercostal artery
Pleural Linings of the Thoracic Cavity
Two pleural linings;
Visceral pleura covers lungs
Parietal pleura lines thorax walls
Four parietal pleural regions:
Costal
Mediastinal
Diaphragmatic
Cervical
what is the Parietal pleura
Outer layer
Lines thoracic wall, diaphragm and mediastinal structure
what is Visceral pleura:
Innermost layer
* Lies close to lung surface and b/w interlobar fissures
difference between right and left lung
right lung = 3 lobes, shorter and wider
Left lung = 2 lobes
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