Question

the only system that does not pass through the thalamus on its way to the cerebral cortex is the ______ system.
a. tactile
b. gustatory
c. olfactory
d. visual
please select the best answer from the choices provided
○ a
○ b
○ c
○ d

Explanation:

The olfactory system is unique. Sensory information from the olfactory receptors travels directly to the olfactory bulb and then to the olfactory cortex (such as the piriform cortex) without first passing through the thalamus. In contrast, the tactile (touch - related, somatosensory system, which has pathways that often go through the thalamus), gustatory (taste, which has connections that can involve thalamic relays in some cases), and visual (optic nerve signals go to the lateral geniculate nucleus of the thalamus before the visual cortex) systems typically have thalamic involvement in their pathways to the cerebral cortex.

Answer:

C. olfactory