Muscle, SmoothMuscle, Smooth, VascularMyocytes, Smooth MuscleMyocytes, CardiacMusclesMuscle ContractionMuscle ProteinsCells, CulturedMuscle, SkeletalMuscle Fibers, SkeletalCalciumMuscle DevelopmentMyocardiumAortaMuscle CellsGuinea PigsRats, Sprague-DawleyRabbitsTracheaMuscle RelaxationHeart VentriclesSmooth Muscle MyosinsRNA, MessengerMembrane PotentialsActinsMuscle Fibers, Fast-TwitchTime FactorsMuscle DenervationMuscle FatigueSignal TransductionRats, WistarMitochondria, MuscleHeartMuscle Fibers, Slow-TwitchDose-Response Relationship, DrugAorta, ThoracicImmunohistochemistryIsometric ContractionPatch-Clamp TechniquesCalcium SignalingCell DivisionMyocardial ContractionPhosphorylationEnzyme InhibitorsSarcoplasmic ReticulumPotassium ChannelsMuscle, StriatedElectric StimulationPapillary MusclesPlatelet-Derived Growth FactorOculomotor MusclesCell DifferentiationGene Expression RegulationArteriesMyosin Heavy ChainsPulmonary ArteryCaffeineNeck MusclesAction PotentialsIsoproterenolCalcium Channels, L-TypeDogsMice, Inbred C57BLMuscle SpindlesAcetylcholineElectrophysiologyVasoconstrictionCalcium ChannelsRespiratory MusclesKineticsEndothelium, VascularCell SeparationPotassiumGizzardAnimals, NewbornCarbacholHypertrophyGene ExpressionBlotting, WesternMolecular Sequence DataMuscle WeaknessUrinary BladderPhenotypeMice, KnockoutSarcolemmaAngiotensin IIPotassium ChlorideCell ProliferationBronchiCell MovementCattleMyosinsDesminNitric OxideMyosin-Light-Chain KinaseCalcium Channel BlockersSodium-Calcium ExchangerMyofibrilsMesenteric ArteriesVentricular Function