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14 Cards in this Set
- Front
- Back
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Describe tension in the three muscle types.
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Tension may vary in all three muscle types
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Describe velocity in the three muscle types.
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Cardiac/Smooth - variable at any given load
Skeletal Muscle - Fixed by fiber type; varies with load |
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In which muscle types are sarcomeres present?
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Cardiac and skeletal
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In which muscle types is troponin found?
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Cardiac and skeletal
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T/F Myosin phosphorylation occurs in all three muscle types
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False. It occurs in the Cardiac and Smooth muscles
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Which of the three muscle types contain T-tubules?
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Cardiac and Skeletal Muscles
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T/F Cardiac muscles and smooth muscles contain gap junctions
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True
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T/F SR is present in all muscle types
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T
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T/F Phospholamban is unique to cardiac muscles
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T
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Describe calcium availability in the three muscle types.
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Cardiac/smooth - variable
Skeletal - maximal levels |
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How significant is the role of extracellular calcium in the three muscle types?
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Importance of Extracellular Calcium:
Smooth (major) Cardiac (moderate) Skeletal (minimal) |
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T/F Na-CA Exchange is absent in the skeletal muscles and is found in the cardiac and smooth muscles
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True
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T/F Functional Syncytium is found in cardiac muscles only
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False.
Some types of smooth muscle also have functional syncytia |
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What are the functions of nerves in the three muscle types?
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Functions of nerves in...
Cardiac (modulate activity) Skeletal (motor unit controlling - including summation and rate coding) Smooth Muscle (may control or modulate activity) |
