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Rib Cage

Revision as of 17:27, 8 November 2018 by NRJC (talk | contribs) (Created page with "==Key Stage 3== ===Meaning=== The '''rib cage''' is the bones in our thorax which serve to protect the lungs and heart. ===About the Rib Cage=== : As air...")
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Key Stage 3

Meaning

The rib cage is the bones in our thorax which serve to protect the lungs and heart.

About the Rib Cage

As air is inhaled the rib cage expands due to intercostal muscles relaxing.
As air is exhaled the rib cage pulls inward due to intercostal muscles contracting.
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