Biology questions (3) 0.0 / 5 ? Biologyrespiratory system and breathingGCSENone Created by: ava brook haighCreated on: 21-02-17 19:50 what happens to the lung volume when breathing in and out? up and down. 1 of 5 what happens to the ribs when breathing in and out up and out. 2 of 5 what happens to intercostal muscles when breathing in and out? contract and relax. 3 of 5 what happens to the diaphragm when breathing in and out? flat and dome. 4 of 5 what happens to the pressure when breathing in and out? down and up. 5 of 5
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