Popis:
Nucleus apicalis - jádro v apex cornu posterioris, tvořeno interneurony zajišťující spoje mezi segmenty.
Rexedovy zóny Nucleus anterolateralis Nucleus anteromedialis Nucleus posterolateralis Nucleus retroposterolateralis Nucleus posteromedialis Nucleus centralis Nucleus nervi accesorii Nucleus apicalis (marginalis) Substantia gelatinosa (Rolandi) Nucleus proprius Nucleus thoracicus (Stilling - Clarke) Nucleus intermediomedialis Nucleus intermediolateralis Nuclei parasympathici sacrales