Gas Exchange in Humans 0.0 / 5 ? BiologyGas ExchangeIGCSEEdexcel Created by: DANIELREEDCreated on: 17-01-16 13:06 Epiglottis Stops food going into your lungs 1 of 14 Larynx Voice box 2 of 14 Trachea Lets air pass through us 3 of 14 Bronchus Carries air to lungs 4 of 14 Bronchioles Carries air to the lungs 5 of 14 Alveoli Tiny air sacs designed for gas exchange 6 of 14 Diaphragm Sheet of muscle with fibrous middle part which is domed: it helps makes breathing movement and separates the thorax from the lungs 7 of 14 Ribs Bones that protect and ventilate lungs 8 of 14 Internal Intercostal Muscles Pull ribs down and in when you breath out 9 of 14 External Intercostal Muscles Pull ribs up and out when you breath in 10 of 14 Pleural Membranes Thin moist membranes forming air tight seal around lungs and separating inside of the thorax from the lungs 11 of 14 Pleural Fluid Liquid filling pleural cavity and acting a lubrication, so surfaces of lungs do not stick to inside of chest wall 12 of 14 Oesophagus Carries food to the stomach 13 of 14 Nasal Passages Warm, clean and adds moisture to the air 14 of 14
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