Which of the following types of neurons conduct impulses from the thalamus to the primary somatosensory area of the cerebral cortex?
A)First order neuron
B)Second order neuron
C)Third order neuron
D)Fourth order neuron
E)Higher order neuron

Question

Quizplus · Accepted Answer

The pathway from the thalamus to the primary somatosensory area of the cerebral cortex involves a three-neuron relay system with the following order: first order neuron in the dorsal root ganglion, second order neuron in the spinal cord or brainstem, and third order neuron in the thalamus. The third order neuron then projects to the primary somatosensory area of the cerebral cortex. Therefore, the correct answer is C) Third order neuron.

Which of the Following Types of Neurons Conduct Impulses from the Thalamus