Ascending tracts Fasciculus gracilis薄束 Arises from spinal ganglion cell below T5 Terminates the gracile nucleus薄束核 ■ Fasciculus cuneatus楔束 Arises from spinal ganglion cell above t4: Terminates the cuneate nucleus 楔束核◼Fasciculus gracilis薄束 Ascending tracts ◼Fasciculus cuneatus楔束 Arises from spinal ganglion cell below T5 ； Terminates the Gracile nucleus 薄束核 Arises from spinal ganglion cell above T4； Terminates the Cuneate nucleus 揳束核