Spinal axons conveying a signal for conscious somatosensation from the upper limb ascend in which of the following?
A. Ventral horn
B. Fasciculus gracilis
C. Fasciculus cuneatus
D. Internal arcuate fibers
E. Medial lemniscus
ANS: C
Rationale: Conscious somatosensory information from peripheral receptors is conveyed to the dorsal root and ascends through the ipsilateral dorsal column. Axons from the lower limb ascend in the medial dorsal column, called the fasciculus gracilis. Axons from the upper extremity ascend in the lateral dorsal column, called the fasciculus cuneatus.
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