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The Respiratory System

Terms and definitions of the respiratory system.
a data set by ms_thompson
created April 7, 2017
Upper Respiratory TractParanasal sinusesA group of four paired air-filled spaces that surround the nasal cavity
Upper Respiratory TractOral cavityThe cavity of the mouth
Upper Respiratory TractNasal cavityA large air filled space above and behind the nose in the middle of the face; helps warm and moisten air
Upper Respiratory TractCiliaTiny hairs that protect the nasal passageway and respiratory tract, filtering out particles during inhalation
Upper Respiratory TractPharynxAllows for the movement of air from the nose and mouth to the larynx
Upper Respiratory TractLarynxThe voice box; a hollow muscular organ that forms an air passage to the lungs and holds the vocal cords.
Upper Respiratory TractEpiglottisA small flap of tissue that covers the larynx to keep food and liquid from entering the lungs.
Upper Respiratory TractVocal cordsFolds of tissue in the larynx whose edges vibrate to produce the voice.
Upper Respiratory TractGlottisThe gap between the vocal cords
Lower Respiratory TractTracheaThe windpipe; a membranous tube reinforced by rings of cartilage that extends from the larynx to the bronchial tubes and conveys air to and from the lungs
Lower Respiratory TractBronchiThe two main branches of the trachea that lead to the lungs, where they divide into smaller branches
Lower Respiratory TractBronchiolesTiny branches of air tubes within the lungs that are a continuation of the bronchi; connect to the alveoli
Lower Respiratory TractAlveoliTiny air sacs where the exchange of oxygen and carbon dioxide takes place
Lower Respiratory TractDiaphragmA muscular partition that inflates the lungs by increasing the volume of the thorax during contraction
Lower Respiratory TractLungsThe pair of organs into which air is drawn so that oxygen can pass into the blood and carbon dioxide be removed
Lower Respiratory TractPleuraThe membranes lining the thorax and enveloping the lungs
Lower Respiratory TractBronchial treeThe branching system of bronchi and bronchioles conducting air from the windpipe into the lungs
Lower Respiratory TractThoraxThe chest; the part of the human body between the neck and the diaphragm, containing the heart and lungs
Respiratory systemThe set of organs that allows a person to breathe and exchange oxygen and carbon dioxide throughout the body
VentilationThe moving of air from the nasal cavity and mouth to the bronchioles
RespirationBreathing; the inhalation of oxygen and the exhalation of carbon dioxide
Respiratory rateThe number of breaths per minute
MucusTraps particles before they reach delicate alveoli; warms and moistens air
DiffusionThe process by which oxygen moves from the alveoli to the blood through the capillaries
InhalationThe act of breathing in
ExhalationThe act of breathing out
AsthmaAn inflammatory lung disease that causes airways to tighten and narrow, creating difficulty breathing
BronchitisWhen the membranes lining the bronchial tubes become inflamed and an excessive amount of mucus is produced, causing a serious cough
PneumoniaLung inflammation caused by bacterial or viral infection, in which the air sacs fill with pus and may become solid
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