USMLE Forum Archives - USMLE Step 1 - mdp29
mdp29
babbu5508 - 06-01-11 00:45
Degeneration of which of the following is most likely associated with this patient's fasciculations?
/ A. Dorsal columns
/ B. Dorsal horn
/ C. Lateral corticospinal tract
/ D. Lateral horn
/ E. Ventral horn
/ F. Ventral white commissure
babbu5508 - 06-01-11 00:45
Degeneration of which of the following is most likely associated with this patient's fasciculations?
/ A. Dorsal columns
/ B. Dorsal horn
/ C. Lateral corticospinal tract
/ D. Lateral horn
/ E. Ventral horn
/ F. Ventral white commissure
The correct answer and explanation will be available after you answer.
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#1
Re: mdp29 dinmenace - 06-07-11 16:27 My answer is: a.
Symptoms of lower motor neuron degeneration include muscle weakness and atrophy, muscle cramps, and fleeting twitches of muscles that can be seen under the skin (fasciculations).
#3
Re: mdp29
babbu5508 - 06-16-11 01:16 The correct answer is E. The ventral horn is part of the gray matter of the spinal cord and contains cell bodies of the LMNs. Degeneration of these neurons lead to a variety of LMN signs, including fasciculations, atrophy, hypotonia, decreased strength, and hyporeflexia.
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