LordosisSexual Behavior, AnimalPostureSpinal CurvaturesKyphosisSpinePelvisLumbar VertebraeScoliosisSacrumVentromedial Hypothalamic NucleusHypothalamus, MiddleSpinal FusionLumbosacral RegionPelvic BonesSyncope, VasovagalRadiographyCervical VertebraeOsteoarthritis, SpineOvariectomySpondylolysisSpondylolisthesisPreoptic AreaThoracic VertebraeDiskectomyInternal FixatorsSpondylosisIntervertebral DiscEstradiolIntervertebral Disc DegenerationProgesteroneZygapophyseal JointRange of Motion, ArticularRats, Long-EvansBone ScrewsPostural BalanceScheuermann DiseaseSyncopeCastrationAbdominal MusclesVentral Tegmental AreaBiomechanical PhenomenaSpinal DiseasesHandling (Psychology)2,3,4,5-Tetrahydro-7,8-dihydroxy-1-phenyl-1H-3-benzazepineOrthopedic Fixation DevicesOssification of Posterior Longitudinal LigamentBracesLongitudinal LigamentsHypothalamusProgestinsSupine PositionSerotonin 5-HT1 Receptor AntagonistsLow Back PainGravity SensingRadiculopathyOtolithic MembraneRotation