When completing a neurological assessment, which cranial nerves are tested within the mouth?
III, IV, VIII
III, II, VI
IX, X, XII
I, I, III
The Correct Answer is C
A. Cranial nerves III, IV, and VIII are not involved in mouth functions; they primarily deal with eye movements and hearing.
B. Cranial nerves III, II, and VI are involved in vision and eye movement but not in mouth functions.
C. Cranial nerves IX (glossopharyngeal), X (vagus), and XII (hypoglossal) are all tested through functions such as swallowing, speech, and movement of the tongue, which occur in the mouth.
D. Option D incorrectly lists cranial nerve I twice; cranial nerve I (olfactory) is related to the sense of smell, not the mouth.
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Correct Answer is A
Explanation
A. Respiratory acidosis: The pH is low (indicating acidosis), and the Paco₂ is elevated, which signifies that carbon dioxide retention is causing the acidosis. This pattern indicates respiratory acidosis, as the elevated HCO₃ suggests a compensatory response.
B. Respiratory alkalosis: Respiratory alkalosis would show a high pH with a low Paco₂. This is not consistent with the client’s lab results.
C. Metabolic acidosis: Metabolic acidosis would show a low pH with a low HCO₃. In this case, the HCO₃ is slightly elevated, ruling out metabolic acidosis.
D. Metabolic alkalosis: Metabolic alkalosis would show a high pH with an elevated HCO₃, which does not match the client’s results.
Correct Answer is ["B","C","E"]
Explanation
A. The diaphragm of the stethoscope is used for high-pitched sounds, such as lung and normal heart sounds, not low-pitched sounds.
B. The binaural (earpieces) should fit snugly in the ears to ensure proper sound transmission and clarity.
C. Short tubing provides more accurate sounds by minimizing sound distortion, making it ideal for clinical use.
D. The bell of the stethoscope is used for low-pitched sounds, such as heart murmurs, not high-pitched sounds.
E. The stethoscope works by blocking out environmental sounds to help the user focus on internal body sounds.