7.2 – Breathing and Respiration

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7.2 – Breathing and Respiration. Pages 249 - 254. The Structures. The diaphragm and the intercostal muscles (rib muscles) control the movement of air in and out of the lungs. Diaphragm – domed shaped layer of muscle that separates the thoracic and abdominal cavity. - PowerPoint PPT Presentation

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