stomatology - teeth, cardiology - ?

HEART
WordClue
GUMThe flesh around the teeth
RATEof exchange or heart
BRAINstomatology - teeth, neurology - ?
LIVERstomatology - teeth, hepatology - ?
MEDALPurple Heart
TEETHcardiology - heart, stomatology - ?
ATRIUMpart of heart
BOWELScore, heart
BRAVERYheart
DARKNESSHeart of ... (Conrad)
NEUROLOGYteeth - stomatology, brain - ?
VENTRICLEpart of heart
CARDIOLOGYteeth - stomatology, heart - ?
HEPATOLOGYteeth - stomatology, liver - ?
PERICARDIUMpart of heart
STOMATOLOGYheart - cardiology, teeth - ?
MAWstomach, tummy
LIVERstomatology - teeth, hepatology - ?