![]() ![]() * That means only the first 350 ml of the 500 ml inspired with each breath (tidal volume) at rest mixes with the air in the alveoli. * This is called ‘anatomical dead space’. * Hence the airway space behaves as functionally dead so far as gas exchange is concerned. * The air in the airways (Trachea, bronchi) is breathed out unchanged as air in them does not participate in gaseous diffusion. * When air is breathed in, only the air that reaches the alveoli participates in gas exchange. * Examiner is simply asking that how will you measure anatomical dead space. ![]() Alveolar dead space is negligible in healthy individuals, but can increase dramatically in some lung diseases.Īns.
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