FISDAP Airway Exam Questions and Correct Answers | Latest Update
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Course
FISDAP
Institution
FISDAP
From the atmosphere, what structures does air pass through during ventilation?
-:- Starts in atmosphere, then nose, nasopharyngeal space/orophargyneal
space (if mouth breather), then pharynx, larynx, trachea, bronchi,
bronchioles, alveoli
What is the purpose of the nasal passages and nasopha...
✓ -:- The diaphragm, cervical muscles (neck), intercostals, abdominal
muscles, and pectoral muscles.
What muscles are involved in expiration?
✓ -:- none, expiration (if done passively) is achieved by the relaxation of
the diaphragm.
What is the primary driver of respiration? (Why would we increase/decrease RR?)
✓ -:- The CSF in the brain has chemoreceptors sensitive to CO2. When
there is too much CO2. The pH changes. These sensors feed back to the
medulla oblongata, which stimulates the phrenic nerve which innervates
the diaphragm. They cause an increase in activity of the diaphragm. This
increases the RR which causes us to increase tidal volume. This means
more CO2 is exhaled. And brings our pH back to normal.
We also have the less sensitive hypoxic drive
What is hypoxic drive?
4|P a g e | G r a d e A + | 2 0 2 0 2 5
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