Question 13 / 23:  A person with a left facial paralysis who is also deaf in the left ear is tested for his corneal reflex.
A.  Stimulation of left cornea does not produce a consensual reflex.
B.  Stimulation of left cornea produces a consensual but not a direct reflex.
C.  Stimulation of left cornea results in a direct but not a consensual reflex.
D.  Stimulation of the right cornea produces a direct and consensual reflex.
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Explanation:

The trigeminal is intact, so the afferent arm of the corneal reflex is intact. This would result in a normal consensual reflex. Since the facial muscles on the left side are paralyzed, the direct reflex would not be present. The term, direct reflex refers to the side stimulated.

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Ch 06: Head Somatic & Visceral Sensory Systems

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Attribution:  Stephen C. Voron, M.D., Suzanne S. Stensaas, Ph.D. , Department of Neurobiology and Anatomy, University of Utah, School of Medicine, Salt Lake City, Utah 84132, http://library.med.utah.edu/kw/hyperbrain
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