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NSG-300 EXAM 3
ACTUAL EXAM WITH CORRECT
SOLUTIONS.
3 steps in the process of oxygenation: - correct answer-
ventilation, perfusion, and diffusion
Is inspiration an active or passive process? - correct answer- active; stimulated by chemical receptors in the aorta
Is expiration an active or passive process? - correct answer- passive; depends on the elastic recoil properties of the lungs, requiring little or no muscle work
TRUE or FALSE: clubbing will not occur in patients with
asthma. - correct answer- FALSE
What is lung capacity based off of? - correct answer- Age Gender Height
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Where does pulmonary circulation begin? - correct answer- pulmonary artery
which receives poorly oxygenated blood from the right ventricle
What affects the rate of gas diffusion in the lungs? - correct answer- the thickness of the alveolar capillary membrane
What issues cause a thicker alveolar membrane? - correct answer- -pulmonary edema -pulmonary infiltrates -pulmonary effusion
What chronic diseases alter the amount of alveolar capillary membrane surface? - correct answer- -emphysema -pneumothorax -lobectomy
TRUE or FALSE: you can never give too much O2 to a patient
with COPD - correct answer- FALSE
if you do so then they will not be able to properly expel CO2 2 / 3
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What three things influence the capacity of the blood to carry O2? - correct answer- 1. the amount of dissolved O2 in the plasma
- the amount of hemoglobin
- the ability of the hemoglobin to bind with O2
What does the CNS regulate in terms of respiration? - correct answer- rate, depth, and rhythm
What does the cerebral cortex regulate in terms of respiration?
- correct answer- voluntary control of respiration
What does chemical regulation do in terms of respirations? - correct answer- maintains appropriate rate and depth based on changes in CO2, O2, and hydrogen ion concentrations in the blood (pH).
Where are chemoreceptors found in the body? - correct answer- aortic and carotid bodies
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