Q. Cardiac muscle fibres: (Solved)
1. develop tetany only at very high stimulation frequencies
2. develop less tension when stretched due to decreased actin-myosin overlap
3. can derive only 5% of basal caloric requirement from fat
4. have a T-system located at the A-I junctions
5. remain absolutely refractory until the membrane potential repolarises to - 50mV
- e. remain absolutely refractory until the membrane potential repolarises to - 50mV