Uterine HemorrhageMuscle ContractionHemorrhageCerebral HemorrhageSubarachnoid HemorrhageIntracranial HemorrhagesIsometric ContractionRetinal HemorrhageUterine ContractionPostpartum HemorrhageMyocardial ContractionGastrointestinal HemorrhageVitreous HemorrhageEye HemorrhageMuscle, SmoothBasal Ganglia HemorrhageVasospasm, IntracranialIntracranial Hemorrhage, HypertensiveElectric StimulationVasoconstrictionPostoperative HemorrhageHematomaMuscle, SkeletalIsotonic ContractionCalciumGuinea PigsTime FactorsTomography, X-Ray ComputedIntracranial AneurysmChoroid HemorrhagePeptic Ulcer HemorrhageMuscle, Smooth, VascularBasilar ArteryMuscle RelaxationMuscle FatigueElectromyographyPutaminal HemorrhageCerebral AngiographyRabbitsPotassium ChlorideDose-Response Relationship, DrugVasoconstrictor AgentsAneurysm, RupturedRetrobulbar HemorrhageGastrointestinal MotilityTracheaNorepinephrineDogsUrinary BladderCerebral VentriclesPeristalsisRats, Sprague-DawleyMusclesAcetylcholineCerebral ArteriesAtropinePhenylephrineRats, WistarCerebral Hemorrhage, TraumaticShock, HemorrhagicRupture, SpontaneousBrain Hemorrhage, TraumaticTreatment OutcomeHematoma, SubduralIntracranial Arteriovenous MalformationsIleumAorta, ThoracicHydrocephalusVas DeferensOral HemorrhageNifedipineMuscle TonusCarbacholRetrospective Studiesrho-Associated KinasesTorqueMyosin Light ChainsArteriesMagnetic Resonance ImagingPregnancyStrokeOxytocicsVentriculostomySerotonin15-Hydroxy-11 alpha,9 alpha-(epoxymethano)prosta-5,13-dienoic AcidCerebral VentriculographyBlood PressureMesenteric ArteriesUterine InertiaCalcium Channel BlockersCaffeineBrain IschemiaEmbolization, TherapeuticProspective StudiesMotor NeuronsDisease Models, AnimalTissue Plasminogen ActivatorPotassiumMyometriumThalamic Diseases