Thalamus
Peripheral
sensory
ending for pain
or temperature or imprecise touch
Axon in dorsal root
Cell body in dorsal root ganglion
NEURON 1
NEURON 2
Axons cross in spinal cord to other side
Spino-thalamic tract
2
nd
order neuron cell body in dorsal horn of spinal cord
NEURON 3
Thalamo-cortical tract
(somatosensory radiation)
Somatosensory cortex
Central sulcus
©KCL