Intercostal muscles

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Intercostal muscles undergo activation when we are breathing, as they act as a support mechanism. There are three types of intercostal muscle; External, Internal and innermost (11 pairs of each). During Inspiration, External muscles are used most, whereas during expiration Internal intercostal muscles are used more. These three muscles have the ability to move the ribs up as the are positioned between 'adjacent ribs' that line intercostal spaces[1].

References

  1. ↑ Richard L.Drake, A.Wayne Vogl, Adam W.M Mitchell (2010). Gray's anatomy for students. 2nd edition. Philadelphia: Chuchill Livingstone. p149-151


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