Supraspinal vasomotor neurons send projections to the intermediolateral cell column, which is composed of sympathetic preganglionic neurons (SPN) through the T1-L2 segments.
sˈuːpɹəspˈaɪnəl vˈæsəmˌoʊɾɚ nˈʊɹɹɑːnz sˈɛnd pɹədʒˈɛkʃənz tə ðɪ ˌɪntɚmˈiːdɪˌɑːlɐɾɚɹəl sˈɛl kˈɑːlʌm, wˌɪtʃ ɪz kəmpˈoʊzd ʌv sˌɪmpəθˈɛɾɪk pɹɪɡˌæŋɡlɪˈɑːnɪk nˈʊɹɹɑːnz ˌɛspˌiːˈɛn θɹuː ðə tˈiː wˈʌnˈɛl tˈuː sˈɛɡmənts.