215 Oxygenation Terms 2026
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pharynx Ans: Area that contains openings to esophagus and
trachea
trachea Ans: Lies in front of the esophagus and is the airway to
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the lungs
epiglottis Ans: A flap of tissue that seals off the windpipe and
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prevents food from entering.
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bronchioles Ans: Airways in the lungs that lead from the
bronchi to the alveoli.
bronchospasm Ans: a contraction of the smooth muscle in the
walls of the bronchi and bronchioles that tighten and squeeze
the airway shut
alveoli Ans: tiny sacs of lung tissue specialized for the
movement of gases between air and blood
ventilation Ans: movement of air in and out of the lungs
respiration Ans: the exchange of gases oxygen and carbon
dioxide in the lungs
diaphragm Ans: Large, flat muscle at the bottom of the chest
cavity that helps with breathing
intercostal muscles Ans: Muscles located between the ribs,
which move the rib cage during breathing
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pleural membrane Ans: membrane that encloses the lungs
within the rib cage
respiratory rate Ans: the number of breaths taken in one
minute, 12-20 is expected.
respiratory depth Ans: the amount of chest wall expansion
that occurs with each breath; altered depths are described as
deep or shallow
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hyperventilation Ans: the condition of taking abnormally fast,
deep breaths, causing too much carbon dioxide to be removed
by the alveoli
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hypoventilation Ans: decreased rate or depth of air movement
into the lungs
hypoxemia Ans: deficient amount of oxygen in the blood
hypoxia Ans: deficiency in the amount of oxygen reaching the
tissues
lung elasticity (elastic recoil) Ans: the tendency of the elastin
fibers to return to their original position away from the chest
wall after being stretched
lung compliance Ans: the ease with which lungs can be
expanded
airway resistance Ans: the restriction of airflow that is related
to the diameter of the airways
Oxygen Ans: gas that enters the blood through the lungs and
travels to the heart to be pumped via arteries to all body cells