brain - neurology, teeth - ?

STOMATOLOGY
WordClue
GUMThe flesh around the teeth
HEADmind, brain
MINDbrain
STEMbrain or onion
BRAINstomatology - teeth, neurology - ?
HARNSbrain
HEARTneurology - brain, cardiology - ?
LIVERneurology - brain, hepatology - ?
TEETHneurology - brain, stomatology - ?
HELMETbrain bucket
REASONmind, brain
NEUROLOGYteeth - stomatology, brain - ?
CARDIOLOGYbrain - neurology, heart - ?
CONCUSSIONtraumatic brain injury
HEPATOLOGYbrain - neurology, liver - ?
HIPPOCAMPUSpart of brain
ENCEPHALITISInflammation of the brain
HEPATOLOGYbrain - neurology, liver - ?
STEMbrain or onion