NOR-P1 - odontotomy
- nucleus parabrachialis medialis
- nucleus paracentralis thalami
- nucleus parafascicularis thalami
- nucleus paramedianus posterior
- nucleus parasolitarius
- nucleus parataenialis thalami
- nucleus paraventricularis anterior thalami
- nucleus paraventricularis hypothalami
- nucleus paraventricularis posterior thalami
- nucleus periventricularis posterior
- nucleus posterior hypothalami
- nucleus posterior nervi vagi
- nucleus posterolateralis medullae spinalis
- nucleus posteromedialis medullae spinalis
- nucleus pregeniculatus
- nucleus preopticus lateralis
- nucleus preopticus medialis
- nucleus preopticus medianus
- nucleus preopticus periventricularis
- nucleus prepositus
- nucleus proprius
- nucleus pulposus
- nucleus raphes dorsalis
- nucleus raphes magnus
- nucleus raphes medianus
- nucleus raphes obscurus
- nucleus raphes pallidus
- nucleus raphes pontis
- nucleus raphes posterior
- nucleus reticularis intermedius medullae oblongatae
- nucleus reticularis lateralis medullae oblongatae
- nucleus reticularis paramedianus
- nucleus reticularis parvocellularis
- nucleus reticularis pontis caudalis
- nucleus reticularis pontis oralis
- nucleus reticularis tegmenti pontis
- nucleus reticularis thalami
- nucleus retroambiguus
- nucleus reuniens
- nucleus ruber
