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The Respiratory System
Terms and facts about the respiratory system
82
Anatomy
Undergraduate 1
01/21/2012

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Term
Order of Respiration
Definition
Nose,Pharynx,Larynx,Trachea,Primary Bronchi,SecondaryBronchi,Bronchioles, Alveolar Ducts,Alveolar Sacs,Alveoli
Term
Alveolar Duct
Definition
Between bronchioles and alveolar sacs.
Term
Alveolar Sac
Definition
"Grape clusters"; in the lungs.
Term
Alveoli
Definition
Small cavities in the lungs; gas exchange.
Term
Aortic Body
Definition
Chemosensitive cells in the aorta; responds to CO2 and O2 levels.
Term
Bronchi
Definition
Primary and secondary; branches of the trachea.
Term
Bronchiole
Definition
Small branch of the bronchi.
Term
Carbaminohemoglobin
Definition
CO2 combined with hemoglobin; for transport.
Term
Carotid Body
Definition
Chemoreceptor in carotid artery; responds to CO2,O2, & blood acid levels.
Term
Conchae
Definition
Bony projections in the nasal cavity.
Term
Epiglottis
Definition
"Lid"; cartilage covering the entrance to the larynx.
Term
Expiration
Definition
Exhalation; breathing out.
Term
Expiratory Reserve Volume
Definition
ERV; amount of air that can be forced out of the lungs after the tidal volume.
Term
External Nares
Definition
Nostrils.
Term
External Expiration
Definition
Exchange of gases between air in the lungs and blood.
Term
Glottis
Definition
Space between vocal cords.
Term
Heme
Definition
Iron containing part of hemoglobin (4); binds to oxygen molecule.
Term
Homeostatic Mechanism
Definition
A system that maintains a constant environment for the body.
Term
Inspiration
Definition
Inhalation; breathing in.
Term
Inspiratory Reserve Volume
Definition
IRV; amount of air that can be forced into the lungs above normal respiration.
Term
Internal Respiration
Definition
Exchange of gases between blood and body cells; in the capillary beds.
Term
Laryngopharynx
Definition
Lowest part of the pharynx.
Term
Larynx
Definition
Voice box, adam's apple.
Term
Nasal Cavity
Definition
Moist, warm cavities lined by mucosa & olfactory receptors.
Term
Nasal Septum
Definition
Seperates the right & left nasal cavities.
Term
Nasopharynx
Definition
Upper most part of the pharynx.
Term
Olfaction
Definition
Sense of smell.
Term
Oropharynx
Definition
Middle part of pharynx.
Term
Oxyhemoglobin
Definition
Oxygen combined with hemoglobin; for transport.
Term
Paranasal Sinus
Definition
4 pairs of sinuses.
Term
Pharynx
Definition
Throat
Term
Pleura
Definition
Serous membrane in the thoracic cavity.
Term
Pulmonary Ventilation
Definition
Breathing.
Term
Residual Volume
Definition
RV; Air that remains in the lungs after forceful expiration.
Term
Respiration
Definition
Breathing; pulmonary ventilation.
Term
Respiratory Control Center
Definition
Stimulates respiratory muscles; in the medulla & pons.
Term
Respiratory Mucosa
Definition
Mucus-covered membrane that lines the repiratory tract.
Term
Spirometer
Definition
Measures amount of air exchanged in breathing.
Term
Surfactant
Definition
Reduces surface tension and prevents collapse; alveloi.
Term
Tidal Volume
Definition
TV; amount of air breathed in and out with normal breath.
Term
Trachea
Definition
Windpipe.
Term
Vital Capacity
Definition
Largest amount of air breathed in and out; TV+IRV+ERV.
Term
Vocal Cords
Definition
Bands of tissue in larynx that produce sound.
Term
Abdominal Thrusts
Definition
Heimlich maneuver.
Term
Adult Respiratory Distress Syndrome
Definition
ARDS, Alevoli do not inflate normally; due to problems with surfactant.
Term
Apnea
Definition
Stop breathing; temporary.
Term
Asthma
Definition
Obstructive pulmonary disorder; muscle spasms in bronchial walls.
Term
Atelectasis
Definition
Total or partial collapse of the lungs.
Term
Bronchitis
Definition
Inflamation of the bronchi.
Term
Cheyne-Stokes Respiration
Definition
CSR, pattern of breathing; cycles of apnea & hyperventilation.
Term
Chronic Obstructive Pulmonary Disease
Definition
COPD, progressive irreversible obstruction of airflow in the lungs.
Term
Croup
Definition
Non-life-threating laryngitis; bark-like cough.
Term
Deviated Septum
Definition
Nasal septum out of normal position.
Term
Dyspnea
Definition
Difficult or labored breathing.
Term
Emphysema
Definition
Air gets trapped in the alveoli causing them to burst.
Term
Endotracheal Intubation
Definition
A tube is placed through the mouth and into the trachea to ensure an open airway.
Term
Epiglottitis
Definition
Life-threating laryngitis.
Term
Epistaxis
Definition
Bloody nose.
Term
Eupnea
Definition
Normal breathing.
Term
Hemothorax
Definition
Blood is in the pleural space around the lungs; could collapse the lung.
Term
Hyperventilation
Definition
Very rapid, deep breathing.
Term
Hypoventilation
Definition
Slow shallow breathing.
Term
Hypoxia
Definition
Abnormally low concentration of oxygen in the blood or tissue fluid.
Term
Infant Respiratory Distress Syndrome
Definition
IRDS, leading cause of death in premature babies due to lack of surfactant.
Term
Laryngitis
Definition
Inflammation of the larynx.
Term
Lobectomy
Definition
Removal of a single lobe of an organ; ex. lung.
Term
Nasal Polyp
Definition
Painless, non-cancerous growth in the nasal mucosa.
Term
Orthopnea
Definition
Dyspnea that is relieved after sitting or getting up.
Term
Pharyngitis
Definition
Sore throat, inflamation of the pharynx.
Term
Pleurisy
Definition
Inflamation of the pleura.
Term
Pneumonectomy
Definition
Surgical removal of the entire lung.
Term
Pneumonia
Definition
Acute inflammation of the lungs; becomes plugged with thick fluid.
Term
Pneumothorax
Definition
Air is present in pleural space around the lungs; could collapse the lung.
Term
Primary Bronchi
Definition
First branches of the trachea.
Term
Respiratory Arrest
Definition
Stop breathing; without resumption.
Term
Respiratory Distress Syndrome
Definition
Difficulty breathing; due to absence or failure of surfactant.
Term
Rhinitis
Definition
Inflamation of the nasal mucosa.
Term
Secondary Bronchi
Definition
Secondary, smaller, bronchial branches.
Term
Sinusitis
Definition
Sinus infection.
Term
Sudden Infant Death Syndrome
Definition
SIDS, unexpected death of unknown origin in infants.
Term
Tracheostomy
Definition
Cutting an opening into the trachea.
Term
Tuberculosis
Definition
TB; Chronic bacterial infection of the lungs.
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