Use your hands to explore the pleural cavities. (G 3.24;N 195;Gl 10.4)

1. Identify the visceral and parietal (costal, cupola, diaphragmatic and mediastinal) pleura . The costal pleura lines the ribs. The cupola overlies the apex of the lung. The diaphragmatic pleura lines the diaphragm and the mediastinal pleura lines the medistinum (the compartment between the two pleural cavities).
2. Identify the costodiaphragmatic recess. This is the space associated with the reflection of the costal pleura to the diaphragmatic pleura.