line of pleural reflection (sternal,costal, vertebral)
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Introduction
The abrupt lines along which the parietal pleura changes direction from one wall of the pleural cavity to another.
- the sternal line of pleural reflection:
- the costal line of pleural reflection:
- sharp & occurs occurs where the costal pleura becomes continuous with the diaphragmatic pleura inferiorly
- passes obliquely across the:
- 8th rib in the midclavical line
- 10th rib in the midaxillary line
- 12th rib at its neck or inferior to it
- the vertebral line of pleural reflection:
- round, gradual reflection where the costal pleura becomes continuous with the mediastinal pleura posteriorly
- parallels the vertebral column, running in the paravertebral plane from thoracic vertebral level T1-T12 .