The Pleural Cavity

pleural effusion

abnormal accumulation of serious fluid in the pleural space

the different division of our parietal pleura

costal pleura part against the ribs diaphragmic pleura against the diaphragm mediastinal pleura against the mediastinum cervical pleura superior part of pleura

pleurisy

inflammation of the visceral and parietal pleura in the thoracic cavity

the three regions of the thoracic cavity

middle section is the mediastinum (heart) , on either side of this are pleural cavities that contain the lungs

how do the lungs funcitonaly work?

the visceral and parietal pleura membranes have a liquid between them thus thorough hydrostatic forces keeps the two close together. The diaphragm is attached to the parietal pleural membrane thus when it contracts it sucks down the parietal pleura with it but because the visceral pleura is right there it gets sucked down two increasing volume volume.

parietal and visceral pleura

visceral pleura are on lungs whereas parietal pleura line the parietal cavity

what happens during a collapsed lung?

we have a slight negitive pressure thus air will flow in normaly. this happens by lungs expanding. tearing the parietal pleura, air will come removing negitive pressure thus use of that lung

our pleura recesses

when lungs shrink during exhaling these infoldings touch. costomediastinum recess - costal pleura will meet mediastinal pleura anteriorly costodiaphramgic recess - costal pleura with diaphragm pleura