Particulate matter between 15 mu m in diameter are inside t

Particulate matter between 1-5 mu m in diameter are _______ inside the limits of the mucus escalator engulfed by alveolar macrophages swallowed and exposed to acids of the stomach trapped by the laryngeal mucus

Solution

Particles more than 10 micro meter diameter strained out by hairs in the nostrils and settle down on the mucous membranes in the nose and pharnyx. Particals between 2 to10 micro meter diameter, fall on the wall of the bronchi as airflow slow in the smaller passages, there they intiate reflux bronchoconstriction and coughing. They moved from the Lungs by the ciliary escalator action. Partials less than 2 micro meter diameter , reach alvioli whare they ingested by Macrophages. Hence the particulate matter between 1 to 5 micro meter diameter, inside limits mucocilary escalator and engulfed by Macrophages. For the entry of particals into acid of the stomach the size of that partical very high.