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[[Image:Smooth Muscle 1.jpg|thumb|right|150px|Smooth muscle - Copyright RVC 2008]]
 
[[Image:Smooth Muscle 1.jpg|thumb|right|150px|Smooth muscle - Copyright RVC 2008]]
 
*Slower contraction and relaxation
 
*Slower contraction and relaxation
**Undeveloped sarcoplasmic reticulum means that smooth muscle depends on the plasmalemma release of Ca: affects contractile prpperties
+
**Undeveloped sarcoplasmic reticulum means that smooth muscle depends on the plasmalemma release of Ca: affects contractile properties
 
*Smooth muscle lacks troponin
 
*Smooth muscle lacks troponin
 
*Control of smooth muscle contraction involves '''thin and thick filament regulation'''
 
*Control of smooth muscle contraction involves '''thin and thick filament regulation'''
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*'''Single Unit''': myogenic contraction; depolarized by gap junctions; eg. intestinal smooth muscle
 
*'''Single Unit''': myogenic contraction; depolarized by gap junctions; eg. intestinal smooth muscle
 
*'''Multi-unit''': neurogenic contraction; no gap junctions; eg. iris
 
*'''Multi-unit''': neurogenic contraction; no gap junctions; eg. iris
      
==Cardiac Muscle==
 
==Cardiac Muscle==
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