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Language of Medicine Chapter 12
Vocabulary & definitions for Language of Medicine Chapter 12 - Respiratory System (NTR202)
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Undergraduate 1
11/01/2010

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Term
abscesses
Definition
accumulated pus that is surrounded by inflamed tissue
Term
acidosis
Definition
acid accumulation in body tissue: depresses the central nervous system and can lead to disorientation and eventually coma
Term
acute respiratory distress syndrome
Definition
respiratory failure triggered by acute lung injury; a medical emergency that causes dyspnea and pulmonary edema, usually requires assisted (mechanical) ventilation
Term
acute-phase response
Definition
changes in body chemistry resulting from infection, inflammation or injury; characterized by alterations in plasma proteins
Term
alveolus (plural: alveoli)
Definition
air sacs in the lungs
Term
asthma
Definition
chronic inflammatory disorder with airway obstruction caused by bronchial edema, bronchoconstriction, and increased mucus production
Term
atelectasis
Definition
incomplete expansion of alveoli; collapsed, functionless, airless lung or portion of a lung. Caused by tumor or other obstruction of the bronchus, or poor respiratory effort
Term
bacterial translocation
Definition
transfer of bacteria from the intestinal lumen to the bloodstream; increases risks of infection and sepsis
Term
bronchioles
Definition
smallest branches of the bronchi. terminal bronchioles lead to alveolar ducts
Term
bronchus(plural: bronchi )
Definition
main airways of the lungs
Term
c-reactive protein
Definition
an acute-phase protein released from the liver during acute inflammation or stress
Term
carbon dioxide
Definition
gas produced by body cells when oxygen and food combine; exhaled through lungs
Term
chronic bronchitis
Definition
persistent inflammation of the mucous membranes of the lungs; chronic inflammation leads to narrower airways and breathing difficulty
Term
chronic obstructive pulmonary disease
Definition
a group of lung diseases characterized by persistent obstructed airflow through the lungs and airways; include chronic bronchitis and emphysema
Term
cilia
Definition
thin hairs attached to the mucous membrane epithelium lining the respiratory tract. They clear bacteria and foreign substances from the lung. Cigarette smoke impairs function of cilia
Term
counterregulatory hormones
Definition
hormones that have metabolic actions that oppose those of insulin
Term
cyanosis
Definition
bluish cast in skin due to color of deoxygenated hemoglobin. Most evident in persons with lighter, thinner skin; mostly seen on lips, cheeks ears and under nails
Term
cystic fibrosis
Definition
inherited disorder of exocrine glands resulting in thick, mucous secretions that do not drain normally
Term
debridement
Definition
surgical removal of dead, damaged or contaminated tissue resulting from burns or wounds; helps to prevent infection and hasten healing
Term
dermis
Definition
connective tissue layer underneath the epidermis that contains the skin's blood vessels and nerves
Term
diaphragm
Definition
muscle separating chest & abdomen. Contracts and relaxes to make breathing possible
Term
dyspnea
Definition
shortness of breath
Term
emphysema
Definition
hyperinflation of air sacs with destruction of alveolar walls
Term
epidermis
Definition
outer layer of skin
Term
epiglottis
Definition
lid-like piece of cartilage that covers the larynx, preventing food from entering the larynx and trachea during swallowing
Term
epistaxis
Definition
nosebleed
Term
expiration
Definition
breathing out (exhalation)
Term
glottis
Definition
slit-like opening to the larynx
Term
harris-benedict equation
Definition
an equation that estimates basal energy expenditure
Term
hypercapnia
Definition
excess carbon dioxide in the blood
Term
hypermetabolism
Definition
a higher-than-normal metabolic rate
Term
hypoxemia
Definition
low levels of oxygen in the blood
Term
hypoxia
Definition
low amount of oxygen in body tissues
Term
inflammatory response
Definition
the metabolic responses of the immune system to infection or injury
Term
inspiration
Definition
breathing in (inhalation)
Term
larynx
Definition
voice box: contains vocal cords
Term
lobe
Definition
division of a lung
Term
mast cells
Definition
cells within connective tissue that produce and release histamine
Term
mechanical ventilation
Definition
use of a machine to assist or control breathing. In normal respiration the lungs expand, which draws air into the lungs; air is forced into the lungs at regular intervals using pressure
Term
mediastinum
Definition
region between the lungs in the chest cavity. Contains trachea, heart, aorta, esophagus and bronchial tubes
Term
metabolic stress
Definition
a disruption in the body's chemical environment due to the effects of disease or injury. Metabolic stress is characterized by changes in metabolic rate, heart rate, blood pressure, hormonal status and nutrient metabolism
Term
multiple organ failure
Definition
a failure of more than one organ system that occurs during intensive care; often results in death
Term
nares
Definition
openings through the nose carrying air into nasal cavities
Term
oxygen
Definition
gas that passes into bloodstream at lungs & travels to all body cells
Term
pharynx
Definition
throat; including nasopharynx, oropharynx and laryngopharanx
Term
pleural cavity
Definition
body cavity that surrounds the lungs
Term
pulmonary edema
Definition
swelling and fluid in the air sacs and bronchioles
Term
pulmonary parenchyma
Definition
essential parts of the lung responsible for respiration; bronchioles and alveoli
Term
respiration
Definition
process of moving air in and out of lungs; breathing
Term
respiratory stress
Definition
inadequate gas exchange between the air and blood resulting in lower oxygen and higher carbon dioxide levels
Term
sepsis
Definition
acute inflammatory response caused by infection; characterized by symptoms similar to those of SIRS
Term
shock
Definition
dangerous physiological response to injury, bleeding or infection that is characterized by inadequate blood perfusion; associated with reduced blood pressure, raised heart and respiratory rates and muscle weakness
Term
systemic inflammatory response syndrome
Definition
a whole-body response to acute inflammation; characterized by raised heart and respiratory rates, abnormal white blood cell counts and altered body temperature
Term
trachea
Definition
windpipe
Term
visceral pleura
Definition
inner fold of pleura lying closer to lung tissue
Term
wasting
Definition
the breakdown of lean tissue that results from disease or malnutrition
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