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2: Thoracic Wall and Contents, Heart and Lungs
Introduction
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Overview
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Identification
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Summary
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Imaging
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Clinical Case Study
External Intercostal Muscles
Muscle fibers, originating on the inferior rib surface, run from the tubercle, around the body, and to the costal end of the rib.
Fibers course in an oblique direction to insert on the superior surface of the rib below.