Cari's Story Essay

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Cari’s Story Priscilla Glover AP2630 ITT Technical Institute Jacksonville Navid Momeny A) How could an infection in Cari’s nasal passages and pharynx spread into her sinuses? The mucous membranes of the nose, paranasal sinuses, pharynx and middle ear are connected by ducts in the throat. B) What is the cough reflex? Describe the process that Cari’s respiratory system is using to clear her lungs by coughing? The cough reflex has both sensory (afferent) and motor (efferent) components. Pulmonary irritant receptors (cough receptors) in the epithelium of the respiratory tract are sensitive to both mechanical and chemical stimuli. Stimulation of the cough receptors by dust or other foreign particles produces a cough, which is necessary to remove the foreign material from the respiratory tract before it reaches the lungs. A long drawn and deep inhalation followed by a complete closure of the glottis, which results in a strong exhalation that suddenly punches the glottis open and sends a blast of air through the upper respiratory passages. C) Which structures found in the terminal bronchioles and alveoli normally would protect Cari’s lungs from infectious pathogens and particulate matter? There are macrophages presents (wandering phagocytes) that remove dust particles and other debris from the alveolar space. D) How would the resistance of Cari’s airways be affected by excess mucus and fluid in her lung? The lung capacity is decreased because the air space is already filled with mucus and fluids therefore she can’t take in enough oxygen. The extra mucus and fluids put extra pressure on the lungs. E) How would Cari’s lung compliance (the effort required to expand the lungs) be altered as her alveoli fill with fluid due to pneumonia? Cari’s lung compliance would increase from trying to force gases into and out of the alveoli, which are

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