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• Adenoidectomy


  Excision of the adenoids
• Alveolar duct


  Small tube that leads from the terminal bronchiole to the respiratory bronchiole and is the point of attachment for alveoli
• Alveolitis


  Inflammation of the alveoli
• Aphonia


  Condition of the absence of one's voice
• Apnea


  A temporary absence of respiration
• Asphyxia


  Condition caused by a lack of oxygen that leads to impending or actual death
• Aspirate


  To withdraw fluid, tissue, or other substances from a body cavity, cyst, or tumor
• Atelectasis


  Failure of the lung to expand (inflate) completely
• Autonomic


  Involuntary or unconscious
• Bronchiectasis


  Dilation of the bronchi
• Bronchitis


  Inflammation of the bronchus
• Bronchodilators


  A type of drug that causes small airways in the lungs to open up
• Bronchogenic carcinoma


  Cancer that begins in the tissue that lines or covers the airways of the lungs, including small cell and non-small cell lung cancer
• Bronchopneumonia


  Inflammation of the lung, particularly the bronchioles and alveoli, that is associated with bronchitis
• Bronchoscope


  A thin, tube-like instrument used to examine the inside of the trachea, bronchi, and lungs
• Bronchoscopy


  A procedure involving a bronchoscope to examine the inside of the trachea, bronchi, and lungs
• Bronchospasm


  Spasmodic contraction of the smooth muscle of the bronchi
• Carcinogen


  Any substance that causes cancer
• Cardiac notch


  An indentation on the surface of the left lung
• Carina


  A ridge at the base of the trachea (windpipe) that separates the openings of the right and left main bronchi (the large air passages that lead from the trachea to the lungs)
• Chronic


  A condition that lasts a long time with periods of remission and exacerbation
• Computerized tomography (CT)


  A noninvasive imaging technique that uses computers to analyze several cross-sectional X-rays in order to reveal minute details about structures in the body
• Conducting zone


  The major functions of the conducting zone are to provide a route for incoming and outgoing air, remove debris and pathogens from the incoming air, and warm and humidify the incoming air
• Cyanotic


  Pertaining to abnormal color of blue (bluish color, lips and nail beds) caused by deoxygenation
• Defensins


  The lysozyme enzyme and proteins which have antibacterial properties
• Diaphragm


  A sheet of skeletal muscle separating the thoracic and abdominal cavities that has to contract and relax for you to breathe
• Dysphonia


  Condition of difficult speaking, including hoarseness and change in pitch or quality of the voice
• Dyspnea


  Difficulty breathing
• Epiglottitis


  Inflammation of the epiglottis
• Endoscope


  A thin, tube-like instrument used to look at tissues inside the body
• Endoscopy


  A procedure that uses an endoscope to examine the inside of the body
• Epiglottis


  Leaf-shaped piece of elastic cartilage that is a portion of the larynx that swings to close the trachea during swallowing
• Erythrocytes


  Red blood cells
• Eupnea


  A mode of breathing that occurs at rest and does not require the cognitive thought of the individual; also known as quiet breathing
• Expiration


  Exhalation, or the process of causing air to leave the lungs
• External nose


  The surface and skeletal structures that result in the outward appearance of the nose and contribute to its numerous functions
• Fauces


  The opening of the oral cavity into the pharynx
• Fibroelastic membrane


  A flexible membrane that closes the posterior surface of the trachea, connecting the C-shaped cartilages
• Glottis


  Composed of the vestibular folds, the true vocal cords, and the space between these folds
• Hard palate


  Located at the anterior region of the nasal cavity and is composed of bone