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.
Apne
A temporary absence of respiration.
Asphyxi
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.
Benign
Non-cancerous.
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.
Epistaxis
Nosebleed.
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.
Hemothorax
Hemorrhage within the pleural cavity.
Hematologist
A doctor who has special training in diagnosing and treating blood disorders.
Hematology
The study of blood and blood-forming issues.
Hilum of the lung
A concave region where blood vessels, lymphatic vessels, and nerves also enter the lungs.
Hypercapnia
Abnormally elevated blood levels of CO2 (carbon dioxide).
Hyperpnea
Forced breathing or breathing that is excessive.
Hypocapnia
Abnormally low blood levels of CO2 (carbon dioxide).
Hypoxemia
Below-normal level of oxygen saturation of blood (typically <95 percent).
Hypoxia
Lack of oxygen supply to the tissues.
Inferior
A position below or lower than another part of the body proper.
Influenza (flu)
An acute viral infection involving the respiratory tract.
Inspiration
Inhalation, or process of breathing air into the lungs.
Laryngeal
Pertaining to the larynx.
Laryngitis
Inflammation of the larynx.
Laryngopharynx
One of the three regions of the pharynx; inferior to the oropharynx and posterior to the larynx.
Laryngoplasty
Surgical repair of the larynx.
Laryngoscope
A thin, tube-like instrument used to examine the larynx.
Laryngoscopy
Examination of the larynx with a mirror or laryngoscope.
Larynx
A cartilaginous structure inferior to the laryngopharynx that connects the pharynx to the trachea and helps regulate the volume of air that enters and leaves the lungs; also known as the voice box.
Lobectomy
Excision of the lobe(s) of an organ.
Lymphocytes
The second most common type of leukocyte and are essential for the immune response.
Malignant
Cancerous.
Mucus
A thick, slippery fluid made by the membranes that line certain organs of the body.
Nasopharyngitis
Inflammation of the nose and pharynx.
Nasopharynx
The upper part of the throat behind the nose. An opening on each side of the nasopharynx leads into the ear.
Nebulizer
A device used to turn liquid into a fine spray.
Nosocomial infection
Infection acquired in hospital.
Oropharynx
A passageway for both air and food; borders the nasopharynx and the oral cavity.
Oximeter
Instrument used to measure the oxygenation of tissues.
Pharyngeal tonsil
The tonsil located at the back of the throat; also known as the adenoid when swollen.
Pharyngitis
Inflammation of the pharynx.
Pharynx
A tube formed by skeletal muscle and lined by mucous membrane that is continuous with that of the nasal cavities; also known as the throat.
Pleural effusion
An abnormal collection of fluid between the thin layers of tissue (pleura) lining the lung and the wall of the chest cavity.
Pleurisy
Inflammation of the pleura.
Pneumoconiosis
A condition caused by the inhalation of dust.
Pneumonectomy
Excision of the lung.
Pneumonia
A severe inflammation of the lungs in which the alveoli (tiny air sacs) are filled with fluid.
Pneumothorax
An abnormal collection of air in the space between the thin layer of tissue that covers the lungs and the chest cavity that can cause all or part of the lung to collapse.
Polysomnography (PSG)
Simultaneous and continuous monitoring of several parameters during sleep to study normal and abnormal sleep.
Posterior
Describes the back or direction toward the back of the body.
Pulmonary artery
Artery that arises from the pulmonary trunk.
Pulmonary edema
Fluid accumulation in alveoli and bronchioles (related to heart failure).
Pulmonary embolism
A blood clot within the lung.
Radiologist
A doctor who has special training in creating and interpreting pictures of areas inside the body.
Radiography
A procedure that uses x-rays to take pictures of areas inside the body.
Radiology
The use of radiation or other imaging technologies to diagnose or treat disease.
Respiratory zone
The respiratory zone includes structures that are directly involved in gas exchange.
Rhinitis
Inflammation of the mucous membranes of the nose.
Rhinoplasty
A plastic surgical operation on the nose, either reconstructive, restorative, or cosmetic.
Rhinorrhea
Excess nasal drainage; also called a “runny nose.”
Septal cartilage
The flexible hyaline cartilage connected to the nasal bone.
Sinusitis
Inflammation of the sinuses.
Soft palate
Located at the posterior portion of the nasal cavity and consists of muscle tissue.
Sonogram
A computer picture of areas inside the body created by high-energy sound waves.
Spirometry
The measurement of volume of air inhaled or exhaled by the lung.
Sputum
Mucus and other matter brought up from the lungs by coughing.
Stethoscope
An instrument is used to hear sounds produced by the heart, lungs, or other parts of the body.
Sympathetic nervous system (SNS)
The division of the nervous system involved in our fight-or-flight responses. It continuously monitors body temperature and initiates appropriate motor responses.
Tachypnea
Rapid breathing.
Thoracalgia
Pain in the chest.
Thoracentesis
Removal of fluid from the pleural cavity through a needle inserted between the ribs.
Thoracic
Pertaining to the chest.
Thoracoscope
A thin tube-like instrument used to examine the inside of the chest.
Thoracoscopy
Examination of the inside of the chest, using a thoracoscope.
Thoracotomy
An operation to open the chest.
Tonsillectomy
Excision of the tonsils.
Tonsillitis
Inflammation of the tonsils.
Tracheitis
Inflammation of the trachea.
Tracheostomy
Surgery to create an opening into the trachea.
Tracheotomy
Surgical incision of the trachea.
Trachea
The windpipe.
Upper respiratory infection
Infection of the nasal cavity, pharynx and larynx cause by a virus.
Uvula
A small bulbous, teardrop-shaped structure located at the apex of the soft palate.
Ventilator
A machine used to help a patient breathe.