Q. Regarding the structure of cardiac muscle, which statement is INCORRECT? (Solved)
1. T-system lies at Z-lines
2. functions as a syncytium due to the presence of tight junctions
3. intercalated discs occur at Z-lines
4. contains large numbers of elongated mitochondria
5. thin filaments include troponin T, C and I
- b. functions as a syncytium due to the presence of tight junctions