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respiratory tract
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Respiratory Tract
In animals, the air passageways that lead from the nose and mouth to the lungs, including the air sacs of the lungs. A specialized epithelial tissue lines much of these air passages. This is cilated epithelium and contains cells with beating hairs called cilia that sweep mucus and trapped particles away from the air sacs in the lungs. Smoking damages this epithelium.
Care should be taken with the term ‘respiratory tract’, because it could be confusing. The word respiration is now linked to processes that occur inside cells and is no longer used to relate to air movements in the air passageways. The term ‘air passageway’ is probably a less confusing term. Air movements in the air passageways are called ventilation (breathing).
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adenosine triphosphate
aerobic
aerobic respiration
alveolus
anaerobic respiration
ATP
breathing
bronchiole
bronchus
carbon dioxide
cilia
diaphragm (anatomy)
diffusion
energy (biology)
epiglottis
gas exchange
glucose
intercostal
lactic acid
lung
mucus
nicotine
oxygen
oxygen debt
respiration
respiratory tract
smoking (tobacco)
thorax
trachea
ventilation
water
aerobic
aerobic respiration
alveolus
anaerobic respiration
ATP
breathing
bronchiole
bronchus
carbon dioxide
cilia
diaphragm (anatomy)
diffusion
energy (biology)
epiglottis
gas exchange
glucose
intercostal
lactic acid
lung
mucus
nicotine
oxygen
oxygen debt
respiration
respiratory tract
smoking (tobacco)
thorax
trachea
ventilation
water
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