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NURS300 final oxygenation exam practice questions and answers

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NURS300 final oxygenation exam practice questions and answers ventilation - Answer-process of moving gases in and out of the lungs diffusion - Answer-exchange of respiratory gases across alveoli capillary membrane perfusion - Answer-cardiovascular system pumping blood to and from the lungs and ...

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  • October 6, 2024
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FIRST PUBLISH SEPTEMBER 2024




NURS300 final oxygenation exam
practice questions and answers

ventilation - Answer✔✔-process of moving gases in and out of the lungs


diffusion - Answer✔✔-exchange of respiratory gases across alveoli capillary membrane


perfusion - Answer✔✔-cardiovascular system pumping blood to and from the lungs and body


How do gases move into & out of the lungs? - Answer✔✔-- intrapleural pressure is negative, less than

atmospheric pressure


- in order for air to flow into the lungs intrapleural pressure becomes more negative creating a pressure

gradients between the atmosphere and the alveoli


- the diaphragm & external intercostal muscles contract to create negative pleural pressure increases the

size of the thorax for inspiration


- relaxation of the diaphragm & contraction of the internal intercostal muscles allow air to escape from

lungs


work of breathing - Answer✔✔-the product of pressure and volume for each breath


inspiration - Answer✔✔-breathing in (inhalation)


expiration - Answer✔✔-breathing out (exhalation)


surfectant - Answer✔✔-coats walls of alveolus and prevents collapse



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, EMILLYCHARLOTTE 2024/2025 ACADEMIC YAER ©2024 EMILLYCHARLOTTE. ALL RIGHTS RESERVED
FIRST PUBLISH SEPTEMBER 2024


atelectasis - Answer✔✔-a condition where alveoli in your lung or a part of your lung deflates, causing a

partial or complete collapsed lung


compliance - Answer✔✔-the total compliance of both lungs, measuring the extent to which the lungs

will expand (change in volume of lungs)


airway resistance - Answer✔✔-the increase in pressure that occurs as the diameter of the airways

decreases from mouth/nose to alveoli.


tidal volume - Answer✔✔-Amount of air that moves in and out of the lungs during a normal breath


residual volume - Answer✔✔-Amount of air remaining in the lungs after a forced exhalation


forced vital capacity - Answer✔✔-the maximum amount of air that can be removed from the lungs

during forced expiration


spirometry - Answer✔✔-a measurement of breathing (or lung volumes)


respiratory gas exchange - Answer✔✔-diffusion of respiratory gases occurs at the alveolar capillary

membrane- thickness of the membrane affects the rate of diffusion


increased thickness of membrane - Answer✔✔-slows diffusion, gases take longer to transfer across

membrane- slower exchange, decreased delivery of oxygen to tissues


ex: pulmonary edema, pulmonary infiltrates, pulmonary effusion


factors that alter alveolar capillary membrane surface area - Answer✔✔-- chronic disease (emphysema)


- acute disease (pneumothorax)


- surgical process (lobectomy)

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