1,2消化道平滑肌特性(Characteristics of gut smooth muscle) 1.21消化道平滑肌的一般特性 1)兴奋性(Excitability:low,slow contraction 2)伸展性(Extensibility):bigger. 3)紧张性(Tensity):tonic contraction. 4)自动节律性(Automaticity):slow rhythm. 5)敏感性(Sensitivity):sensitive to chemical, stretch and temperature stimuli. 1.2.2电生理特性(electrical characteristics) 静息电位(Resting potential)) 钾离子平衡电位，膜电位值-55~60毫伏1.2 消化道平滑肌特性(Characteristics of gut smooth muscle) 1.2.1 消化道平滑肌的一般特性 1）兴奋性(Excitability): low, slow contraction 2）伸展性(Extensibility): bigger. 3）紧张性(Tensity) :tonic contraction. 4）自动节律性(Automaticity): slow rhythm. 5）敏感性(Sensitivity):sensitive to chemical, stretch and temperature stimuli. 1.2.2 电生理特性(electrical characteristics) ●静息电位(Resting potential) 钾离子平衡电位，膜电位值-55～60毫伏