Final answer:
The spinothalamic tract is the ID tract associated with the Spinothalamic tract. It begins with neurons in a dorsal root ganglion and carries pain and temperature sensation to the cerebral cortex.
Step-by-step explanation:
The spinothalamic tract is the ID tract associated with the Spinothalamic tract. It begins with neurons in a dorsal root ganglion, which send their axons to the dorsal horn of the spinal cord. These axons synapse with the second neuron in the pathway, which has its cell body in the spinal cord gray matter and connects to the thalamus. The second neurons then decussate within the spinal cord and ascend to the brain, entering the thalamus and synapsing with the third neuron in their pathway. The thalamic neurons then project their axons to the spinothalamic tract, which synapses in the cerebral cortex.