How the diaphram works to create negative pressure. Positive pressure given by example of a paramedic forcing air with a bag into someone, also the frog example/swallowing air. Sucking air vs pushing air into the lungs. What happens with a pnuemothorax (the two different kinds), and how to treat it. Muscles of inspiration and respiration.
Questions: What are some examples of negative and postive pressure?
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