sistem saraf tepi (nervus craniales -->N1 (nervus olfactorius), N2 (nervus opticus), N3 (nervus occulomotorius), N4 (nervus trochlearis), N5 (nervus trigeminus), N6 (nervus abducens), N7 (nervus facialis), N8(nervus vestibulocochlearis), N9 (nervus glossopharyngeus), N10 (nervus vagus), N11 (nervus accessorius), N12 (nervus hypoglossus)