Most sensory pathways arise from ganglion cells that have receptor endings on the body and head.

• Most sensory pathways arise from ganglion cells that have receptor endings on the body and head.

• Taste, vision, audition & vestibular receptor cells lack axons. Peripheral ganglion cell axons synapse on receptor cells in the peripheral organ.

• Olfaction receptor cells have axons that synapse in the CNS.

• All sensory pathways have at least 3 pathway neurons to reach the cerebral cortex but also have integration via interneuron within local sites.

• All sensory pathways except olfaction pass through the dorsal thalamus.

• Most sensory inputs are crossed before reaching the thalamus.