2. Sensory pathways: 3 neurons o 1st: enters spinal cord from periphery o 2nd: crosses over(decussates ), ascends in spinal cord to thalamus o 3rd: projects to somatosensory cortex2. Sensory pathways: 3 neurons ⚫ 1 st: enters spinal cord from periphery ⚫ 2 nd: crosses over (decussates), ascends in spinal cord to thalamus ⚫ 3 rd: projects to somatosensory cortex