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Respiratory System

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Question
Answer
Breathing   inhaling and exhaling of air  
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Cyanosis   bluish color of skin caused by oxygen deficiency in the blood  
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Diffusion   moving of molecules from a region of higher concentration to a region of lower concentration of molecules  
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Eupnea   normal respiration  
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Respiration   exchange of oxygen and carbon dioxide  
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Inhalation   phase during which air is drawn into lungs  
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Exhalation   expulsion of air from alveoli of lungs  
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Cellular respiration   use of oxygen and nutrients to produce energy, water, and carbon dioxide  
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Nose or mouth   where air enters respiratory system  
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Cilia   tiny hairs that filter out dust and other particles that enter the nose  
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Pharynx   extends from mouth to esophagus; provides passageway for air from nostrils to trachea  
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Esophagus   pathway for food, leads to the stomach  
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Epiglottis   covers air only passage keeping food and liquid out of lungs  
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Larynx   at upper end of trachea; contains vocal cords  
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Trachea   windpipe, extends from larynx to bronchi  
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Bronchi   branches of trachea leading to lungs  
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Bronchioles   small tubes (thin as a strand of hair) in lungs branching from bronchi to alveoli  
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Alveoli   tiny air sacs, where exchange of oxygen and carbon dioxide takes place  
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Lungs   pair of lobed organs in chest cavity, extending from the diaphragm to the clavicle  
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Diaphragm   muscle separating the abdominal and chest cavities; contraction of the diaphragm causes air to enter the lungs  
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Pleura   serous membrane that covers the lungs and lines the chest cavity  
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Hyperpnea   abnormally increased breathing  
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Apnea   cessation of breathing  
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Anoxia   lack of oxygen  
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Asphyxia   oxygen deficiency with a resulting increase of carbon dioxide in the tissues  
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Dyspnea   Painful or Labored breathing  
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Tachypnea   fast breathing  
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Bradypnea   slow breathing  
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Asthma   allergic reaction in which the walls of the small bronchioles swell with a thick mucus secretion  
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Bronchitis   the membranes lining the larger bronchial tubes become inflamed and an excessive amount of mucus is produced  
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Common cold   most widespread of all communicable diseases, characterized by swollen and inflamed mucous membranes of the nose and throat with copious discharge  
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Cough   mechanism for clearing obstructions from airway  
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Emphysema   swelling of alveoli due to chronic bronchial obstruction  
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Epistaxis   nose bleed  
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Hay fever   sensitivity to foreign proteins causing watery discharge from eyes and nose  
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Influenza   acute, contagious disease characterized by inflammation of the upper respiratory tract and generalized aches and pains  
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Pleurisy   inflammation of the pleura – usually accompanies infections of the lung  
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Pneumonia   inflammation of the alveoli of the lung – may be caused by bacteria or viruses  
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Sinusitis   inflammation of a sinus  
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