Inferior extent of pleura posteriorly corresponds to which rib?

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Multiple Choice

Inferior extent of pleura posteriorly corresponds to which rib?

Explanation:
The pleural cavities extend downward on the back and fuse with the diaphragmatic pleura at about the level of the 12th rib. Therefore the inferior margin of the pleura on the posterior chest wall corresponds to the 12th rib. The other ribs lie above this level, so they don’t mark the lower extent. This landmark helps define the posterior limit of the pleural space.

The pleural cavities extend downward on the back and fuse with the diaphragmatic pleura at about the level of the 12th rib. Therefore the inferior margin of the pleura on the posterior chest wall corresponds to the 12th rib. The other ribs lie above this level, so they don’t mark the lower extent. This landmark helps define the posterior limit of the pleural space.

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