How the sandfish lizard filters particles and what we may learn from it archive?
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The sandfish lizard Scincus scincus spends its life in the aeolian dune deserts. To prevent sand grains from entering its lungs, it is hypothesized that the particles are aerodynamically filtered when they enter the nasal cavity: The vestibulum is a narrow rounded channel leading to a kind of where cilia and mucus are present. In this chamber the particles get caught by mucus during a slow, long-lasting inhalation (2 s) due to the air flow induced by the characteristic morphology in this area, and eventually get exhaled because of an intense, cough-like exhalation that lasts only 40 ms.
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