General properties of gastrointestinal smooth muscle LoW excitability High distensibility Tonic contraction Autorhythmicity High sensitivity to temperature, stretch and chemical stimulation
General properties of gastrointestinal smooth muscle Low excitability High distensibility Tonic contraction Autorhythmicity High sensitivity to temperature, stretch and chemical stimulation
Electrophysiological properties of gastrointestinal smooth muscle Resting membrane potential -40~-80mV o lonic basis Em(selective membrane permeability to K, Nat, Ch and Caz+) Electrogenic Nat-K pump
Electrophysiological properties of gastrointestinal smooth muscle Resting membrane potential -40~-80 mV Ionic basis Em (selective membrane permeability to K+ , Na+ , Cland Ca2+) Electrogenic Na+ -K+ pump
膜電位 mv 取縮張力 75 N 10s 1∩ 10s 膜電位 mV 叹縮張力 50 N 1 min
Slow wave(basic electrical rhythm) The spontaneous rhythmic, subthreshold depolarizations of the cell membrane(slow wave) of the gastrointestinal tract that characterizes the underlying electrical activity of the bowel Initiated in the interstitial cells of cajal (Icc) (pacemaker cell)
Slow wave (basic electrical rhythm) The spontaneous rhythmic, subthreshold depolarizations of the cell membrane (slow wave) of the gastrointestinal tract that characterizes the underlying electrical activity of the bowel Initiated in the interstitial cells of Cajal (ICC) (pacemaker cell)
Santiago Ramon Y cajal He and Camillo Golgi received the nobel Prize in 1906 for introduction of the silver-chromate stain
Santiago Ramon Y Cajal He and Camillo Golgi received the Nobel Prize in 1906 for introduction of the silver-chromate stain