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==Key Stage 3==
===Meaning===
'''Intercostal Muscles''' are [[muscle]]s found between the [[rib]]s of the [[Rib Cage|rib cage]].
===About Intercostal Muscles===
: '''Intercostal Muscles''' contract to cause the [[lung]]s to [[inhale]] and relax to allow the [[lung]]s to [[exhale]].
==Key Stage 4==
===Meaning===
'''Intercostal Muscles''' are [[muscle]]s found between the [[rib]]s of the [[Rib Cage|rib cage]].