2. 1 Spinothalamic pathway o Carries pain, temperature C touch and pressure signals 1 st neuron enters spinal cord through dorsal root 2nd neuron crosses over in spinal cord, ascends tO thalamus o 3rd neuron projects from thalamus to somatosensory cortex2.1 Spinothalamic pathway ⚫ Carries pain, temperature, touch and pressure signals ⚫ 1 st neuron enters spinal cord through dorsal root ⚫ 2 nd neuron crosses over in spinal cord; ascends to thalamus ⚫ 3 rd neuron projects from thalamus to somatosensory cortex