For tidal (restful) breathing, the diaphragm contracts and flattens, and the parasternal/external intercostal muscles lift and flare the rib cage.
Para la respiración tidal (en reposo), el diafragma se contrae y aplana, y los músculos paraesternales/intercostales externos elevan y ensanchan la caja torácica.
| Front | What muscles are used for tidal (restful) breathing? |
|---|---|
| Back | 1. Diaphragm contracts to flatten (lungs expand) 2. Parasternal/external intercostals raise & flare rib cage |
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