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Questions and Answers
What is the main difference between the regulation of cardiac and smooth muscles?
What is the main difference between the regulation of cardiac and smooth muscles?
- Cardiac muscles are thick filament regulated while smooth muscles are thin filament regulated
- Both cardiac and smooth muscles are thick filament regulated
- Cardiac muscles are thin filament regulated while smooth muscles are thick filament regulated (correct)
- Both cardiac and smooth muscles are thin filament regulated
What is a unique characteristic of cardiac muscle cells?
What is a unique characteristic of cardiac muscle cells?
- They are found in hollow organs
- They can remain contracted for extended periods with low energy consumption
- They have the inherent ability to generate rhythmic action potentials without external stimuli (correct)
- They can contract in response to electrical or hormonal signals
What is a distinctive feature of smooth muscle cells compared to cardiac muscle cells?
What is a distinctive feature of smooth muscle cells compared to cardiac muscle cells?
- Smooth muscles are found in hollow organs (correct)
- Smooth muscles have the inherent ability to generate rhythmic action potentials without external stimuli
- Smooth muscles are typically mononucleated or binucleated
- Smooth muscles contain more connective tissue than skeletal muscle
What is the role of Titin in myocardial cells?
What is the role of Titin in myocardial cells?
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What is the function of intercalated disks in myocardial cells?
What is the function of intercalated disks in myocardial cells?
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Which components form the electrical junctions in myocardial cells?
Which components form the electrical junctions in myocardial cells?
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