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Questions and Answers
Which type of muscle cells form complex junctions between interdigitating processes known as intercalated disks?
Which type of muscle cells form complex junctions between interdigitating processes known as intercalated disks?
- Skeletal muscle cells
- Smooth muscle cells
- Embryonic muscle cells
- Cardiac muscle cells (correct)
What is the major fuel source for the heart?
What is the major fuel source for the heart?
- Carbohydrates
- Nucleic acids
- Proteins
- Fatty acids (correct)
What is the main reason why cardiac muscle cells are highly resistant to fatigue?
What is the main reason why cardiac muscle cells are highly resistant to fatigue?
- They have a single nucleus
- They have a high number of mitochondria (correct)
- They have complex junctions
- They contain actin and myosin
