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resp disorders

QuestionAnswer
Where does the phrenic nerve originate? C4 of spine
What does injury at C4 of the spinal cord cause? Motor and sensory conduction will be interrupted and breathing will be affected
What is the ventilation- perfusion ratio? Ventilation is air and perfusion is blood the ratio must be matched in alveoli
Where can central chemoreceptors be found? Medulla
Where can peripheral chemoreceptors be found? Aorta and carotids
How does central chemoreceptors control breathing? Changes CO2 and pH, hypercapnia or acidosis increases ventilation
How does peripheral chemoreceptors control breathing? Decreases arterial oxygen with a hypoxic drive
What is expectoration? Coughing up sputum
What is the difference between nonproductive and productive cough? Nonproductive has no secretions or sputum while productive has secretions and sputum
Created by: user-2020346
 

 



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