Relative to skeletal muscle, smooth muscle
◦ only can sustain contractile force without fatigue.
◦ only uses less energy to generate a given amount of force.
◦ uses less energy to generate a given amount of force, can sustain contractile force without fatigue and uses calcium from the sarcoplasmic reticulum and extracellular space.
◦ only uses calcium from the sarcoplasmic reticulum and extracellular space.
◦ uses less energy to generate a given amount of force and can sustain contractile force without fatigue.