@anatomystandard: The Anatomy of a Breath Cycle ​Look at the extreme mechanical shift between maximum expansion and maximum compression of the rib cage. ​The Expansion (Inspiration): The external intercostals contract, lifting the ribs upward and outward to expand thoracic volume. ​The Compression (Forced Expiration): The internal intercostals take over, powerfully pulling the ribs downward and inward to rapidly decrease thoracic volume. ​This dual-layer network doesn't just drive respiration—it acts as a dynamic stabilization system for the entire thoracic spine under load. ​Share this animation with a friend who needs a clear visual of how the rib cage actually moves. #anatomystandard ​#biomechanics #anatomy #intercostals #respiration

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Thursday 04 June 2026 14:31:51 GMT