Lungs 4.5 / 5 based on 3 ratings ? BiologyHuman, animal and plant physiologyASAQA Created by: Lucy JenkinsCreated on: 08-10-12 11:56 2431 Across 1. The external intercostal muscles contraction leads to... (11) Down 2. What happens to the external air pressure during inspiration? (2, 9) 3. The internal intercostal muscles contraction leads to... (10) 4. What is the scientific term for breathing? (12)
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