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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View Related questions
Correct Answer is A
Explanation
A. The carotid pulse should not be assessed bilaterally at the same time, as simultaneous palpation can lead to a decrease in heart rate or cause syncope due to stimulation of the carotid sinus.
B. The radial pulse can be assessed bilaterally without risk.
C. The brachial pulse can also be assessed bilaterally without concern.
D. The femoral pulse is typically assessed one side at a time, but there is no risk in palpating both femoral arteries simultaneously as there is with the carotid.
Correct Answer is B
Explanation
A. Observing for facial symmetry assesses cranial nerves VII (facial nerve) rather than cranial nerve III.
B. Checking the pupillary response to light assesses cranial nerve III (oculomotor nerve), which controls pupil constriction and extraocular eye movements.
C. Testing visual acuity assesses cranial nerve II (optic nerve), not cranial nerve III.
D. Eliciting the gag reflex assesses cranial nerves IX (glossopharyngeal) and X (vagus), not cranial nerve III.