CheekNeural ConductionBone and BonesHeart Conduction SystemBone RemodelingBone DensityMesocricetusMouth MucosaBone ResorptionFacial NeoplasmsBone MarrowAtrioventricular NodeBone NeoplasmsBone DevelopmentBone Marrow CellsBone DiseasesHeart BlockCricetinaeBone RegenerationBone ConductionBone MatrixAction PotentialsBone Marrow TransplantationBone TransplantationElectrocardiographyMedian NerveMouth NeoplasmsCardiac Pacing, ArtificialBone SubstitutesArrhythmias, CardiacRefractory Period, ElectrophysiologicalBone Diseases, MetabolicFractures, Bone