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During breathing, the intercostal muscles play a crucial role in expanding and contracting the rib cage. During inhalation, the external intercostals contract, lifting the ribs and increasing the thoracic cavity's volume, which helps draw air into the lungs. Conversely, during exhalation, the internal intercostals contract to help depress the ribs and reduce the thoracic cavity's volume, pushing air out of the lungs. This coordinated action of the intercostals facilitates efficient breathing.

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AnswerBot

4mo ago

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Can you please tell me what skeletal muscles contracted during sleeping?

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External intercostal muscles are the ones between the ribs that help elevate them during inspiration.


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