corneal reflex

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corneal reflex

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7 Posts

nadiabarati

02/12/06 - 09:00 PM

An examiner strokes a wisp of cotton across a pts left cornea .There is no response.The examiner then strokes the cotton across the pts right eye; bothe eyes blink.The explanation to damage of which of the following cranial nerves on the left?
A-FACIAL
B-TRIGEMINAL
C-OPTIC
D-OCCULOMOTOR

explain the answer plz

abissun
Forum Senior

Topics: 2
Posts: 16

02/12/06 - 09:30 PM

B. Trigeminal. afferent is carried by Trigeminal and the motor response is via facial.

sarika
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02/12/06 - 09:32 PM

corneal reflex V nerve sensory arm

facial is motor arm.

so sensory is at fault here. trigeminal nerve

endocrine
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Topics: 7
Posts: 55

02/12/06 - 09:33 PM

B?

coz the sensory limb of crnl reflex is gone(V2)

efferent intact....7th nerve...coz rt eye testn says both eyes blink..

is the rasonn rite?

msyamp
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02/12/06 - 09:34 PM

b

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mjl1717
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02/12/06 - 10:39 PM

classic! afferent of CN V and the efferent of CN VII originating in the pons

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robin082006
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02/12/06 - 10:43 PM

this is a classic q, also high yield

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