Biology for IGCSE & O level - Gas Exchange In Humans (Section 1 - No. 20)
What are the functions of the intercostal muscles?
Moves ribs downwards and inwards
Moves ribs upwards and outwards
Contracts during quiet breathing
Helps in exhalation by decreasing the size of the chest
Explanation
Intercostal muscles contract to lift the ribs during inspiration.
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