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Respiratory system 1

Components & Functions

TermDefinition
lobe division of a lung
apex tip or upper most portion of the lung
base lower portion of the lung
hilum midline region where the bronchi, blood vessels, and nerves enter and exit the lungs
pleura double-layered membrane surrounding each lung
nostrils, nares openings through the nose carrying air into the nasal cavities
paranasal sinus one of the air cavities in the bones near the nose
cilium thin hair attached to the mucous membrane epithelium lining the respiratory tract
pharynx throat
adenoids lymphatic tissue in the nasopharynx
tonsil small mass of lymphoid tissue in the throat, one on each side of the root of the tongue
larynx voice box
epiglottis lid-like piece of cartilage that covers the larynx, preventing food from entering the larynx and trachea during swallowing
trachea windpipe
bronchus branch of the trachea that is a passageway into the lung
bronchiole smallest branch of the bronchi
glottis slit-like opening to the larynx
alveolus air sac in the lung
diaphragm muscle separating the chest and abdomen
external respiration exchange of air at the lungs
internal respiration exchange of gases at the level of the cells within all organs
mediastinum region between the lungs in the chest cavity
pulmonary parenchyma essential parts of the lung, responsible for respiration; bronchioles and alveoli
inspiration breathing in (inhalation)
expiration breathing out (exhalation)
Created by: MaiNguyen
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