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NSG 532 Exam 3 |Questions with 100% correct answers
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NSG 532 Exam 3 |Questions with 100% correctanswers
Inhalation - ✔️✔️also called inspiration, ATP dependent process, diaphragm contracts/moves
down, thoracic cavity expands in size
exhalation - ✔️✔️also called expiration, ATP independent process, thoracic contracts size
decreases, diaphragm relaxes and moves up
Intercostal muscles - ✔️✔️used only in exercise and respiratory distress
internal intercostals - ✔️✔️with exhalation, muscles contract and thoracic cavity decreases,
diaphragm relaxes
external intercostals - ✔️✔️with inhalation, muscles contract, thoracic cavity expands, diaphragm
contracts
Dalton's law of partial pressure - ✔️✔️atmospheric pressure is the sum of partial pressures of the
individual gases, O2 and CO2 are passively diffused from higher to lower marital pressure,
atmospheric PO2 is higher than alveolar PO2, atmospheric PCO2 is lower than alveolar PCO2
Henry's Law of Solubility - ✔️✔️both partial pressure and solubility of O2 and CO2 will determine
how they will act during gas exchange
,Charles's Law of Temperature - ✔️✔️increase in temperature causes gas molecules to expand
and take up more space, as air enters the lungs, air is warmed the lungs expand.
Bohr's Law if O2 unloading - ✔️✔️Oxygen unloading in tissues happens more readily when CO2
temperature and hydrogen ion concentration are greater
Tidal Volume - ✔️✔️Vt, air moves in and out during one respiration cycle at rest
inspiratory reserve volume - ✔️✔️IRV, volume that can be inspired over and above the tidal
volume, used during exercise
expiratory reserve volume - ✔️✔️ERV, volume that can be expired after the expiration of a tidal
volume
Residual volume - ✔️✔️RV, volume that remains in the lungs after a maximal expiration, cannot
be measured by spirometry
Anatomical dead volume - ✔️✔️Vd, volume of air int he concocting airways that does not
participate in gas exchange
Physiological dead volume - ✔️✔️dead volume plus air in any alveoli that are not perfused and
thus cannot participate in gas exchange
, Alveolar ventilation volume - ✔️✔️volume of air that reaches the alveoli and participates in gas
exchange; Va = (Vt-Vd) x breaths/min
Minute ventilation volume - ✔️✔️MV, volume inspired or expired with each normal breath per
minute; MV = Vt x breaths/minute
Forced expiratory volume - ✔️✔️FEV, measures total volume of air that can be forcibly exhaled in
the first second, FEV1 is decreased in obstructive lung diseases
Inspiratory capacity - ✔️✔️IC, sum of tidal volume and inspiratory reserve volume
functional residual capacity - ✔️✔️FRC, sum of expiratory reserve volume and residual volume,
the volume remaining in the lungs after a tidal volume is expired
Vital capacity - ✔️✔️VC, sum of tidal volume, inspiratory reserve volume, and expiratory reserve
volume. volume of air that can be forcibly expired after a maximal inspriation
Total lung capacity - ✔️✔️TLC, sum of tidal volume, IRV, expiratory reserve volume and residual
volume, volume in the lungs after a maximal inspiration
Forced vital capacity - ✔️✔️FVC, maximum volume of air forcibly exhaling form the point of
maximal inhalation
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