Muscles of breathing activity

In the activity below you need to type in the correct answers from the words and phrases provided here: 'external intercostal,' 'relaxes,' 'internal intercostal,' 'external intercostal muscles,' and 'downwards.'

Fill in all the gaps, then press "Check" to check your answers.

fibres extend in a downwards and forwards direction and fibres extend downwards and backwards. The form the outer layer of intercostal muscles. When the muscle of the diaphragm contracts the central tendon will be pulled . When the diaphragm muscle it will resume its dome shape.


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