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Questions and Answers
Which type of muscle has motor units?
Which type of muscle has motor units?
- Both skeletal and cardiac muscle
- Neither skeletal nor cardiac muscle
- Cardiac muscle
- Skeletal muscle (correct)
What provides electrical connections between cardiac muscle cells?
What provides electrical connections between cardiac muscle cells?
- Sarcolemma
- Fascia adherens
- Mechanical junctions
- Intercalated disks (correct)
What is the role of the sarcoplasmic reticulum in cardiac muscle cells?
What is the role of the sarcoplasmic reticulum in cardiac muscle cells?
- Surrounds myofibrils
- Generates action potentials
- Stores calcium ions (correct)
- Forms intercalated disks
Which muscle type has a higher oxidative capacity due to its high density of mitochondria?
Which muscle type has a higher oxidative capacity due to its high density of mitochondria?
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What is the basic organization and composition of thick and thin filaments in cardiac muscle cells?
What is the basic organization and composition of thick and thin filaments in cardiac muscle cells?
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How are skeletal and cardiac muscle contractions described at the cellular level?
How are skeletal and cardiac muscle contractions described at the cellular level?
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