Breathing 0.0 / 5 ? BiologyHuman, animal and plant physiologyASOCR Created by: elle1999Created on: 05-03-16 16:11 What processes occur during inspiration? Diaphragm flattens. Intercostal muscles contract. Rib cage moves upwards and outwards. Lung pressure decreases. 1 of 5 What processes occur during expiration? Diaphragm relaxes. Muscles relax. Ribcage moves downwards 2 of 5 How are lungs adapted for gaseous exchange? Large surface area- alveoli 3 of 5 Why is being thin helpful for gaseous exchange? short diffusion pathway. One cell thick 4 of 5 how do the lungs maintain a concentration gradient? Good blood supply. Take away more oxygen and bring more carbon dioxide. breathing in and out refreshes air in lungs. 5 of 5
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