Fibers from the mechanoreceptors make their first synapses in the
A) dorsal root ganglia of the cerebellum.
B) dorsal column nuclei of the medulla.
C) the VP nucleus of the thalamus.
D) primary somatosensory cortex.

Question

Quizplus · Accepted Answer

Fibers from the mechanoreceptors first synapse in the dorsal column nuclei of the medulla. From there, the information is relayed to the thalamus and then to the primary somatosensory cortex. The dorsal root ganglia are where the cell bodies of sensory neurons are located, but they do not contain synapses. The VP nucleus of the thalamus is involved in processing visual information, not somatosensory information.

Fibers from the Mechanoreceptors Make Their First Synapses in the