Intercostal muscle

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(Redirected from Intercostal muscles)

Intercostal muscles are several groups of muscles that run between the ribs. They contract to pull the ribcage upwards and outwards, increasing the volume of the thorax and drawing in air.

There are two layers, the external intercoastal muscles and the internal intercostal muscles. These two layers aid in the expansion and the contraction of the ribcage.

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