A&P Break

May 7th, 2007 by rsm

In the tradition of Richmond, another question from Anatomy & Physiology:

A patient complains of numbness of the scalp and forehead and shows no blink reflex when the eye is lightly touched with cotton fibers. This suggests damage to?

a. the opthalmic division of the V nerve
b. the maxillary division of the V nerve
c. the III (oculomotor) nerve
d. the VII nerve
e. the VI nerve

and “like always the answer fill be found in the comments later.”

Posted in WTF | 11 Comments »

11 Responses to “A&P Break”

  1. on 07 May 2007 at 10:38   michele

    This was a toughy. I’d guess d or e.

  2. on 07 May 2007 at 13:00   HomefrontSix

    My first guess (notice I said “guess”) is C.

  3. on 07 May 2007 at 14:03   michele

    Okay, so here’s a test for you:

    How much of this discussion http://neuroscience.jhu.edu/DavidLinden.php

    do you understand?

    Now mind you, I accidently came across his theories from a link on the NY Academy of Sciences website events calendar. Why? ’cause someone told me to get a life this past weekend.

  4. on 07 May 2007 at 15:23   Bou

    I suspect I’ll get this one wrong too, making me 2 for 2.

  5. on 07 May 2007 at 16:11   RedNeck

    3?

  6. on 07 May 2007 at 18:48   caltechgirl

    I’m not going to answer this one because this is the class I used to teach, and I have put this EXACT question on an exam….

    Hint folks: The key is no blink reflex WHEN TOUCHED, hence it is a SENSORY nerve problem rather than a motor nerve problem….

  7. on 07 May 2007 at 19:00   Jean

    um… huh?

  8. on 07 May 2007 at 20:24   rsm

    hint: it’s a function of the Trigeminal Nerve

  9. on 08 May 2007 at 8:49   Chickie

    7th nerve

  10. on 09 May 2007 at 19:03   Bou

    CTG- Well, I knew that the key was probably no blink reflex when touched… but the fact it is a sensory nerve still tells me nothing. Can we attach that to some sort of math theorm? That might help me…

  11. on 09 May 2007 at 20:55   caltechgirl

    here’s some math: Trigeminal means three branches or three divisions. But it does not refer to the numerical designation of the nerve in question.

    I think I might have just given it away. Sorry RSM….Feel free to edit!

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