Q. In visceral smooth muscle: (Solved)
1. Ca2+ for contraction is released from sarcoplasmic reticulum
2. membrane potential has a resting value of -90mV
3. the excitation contraction coupling time is rapid (<10ms)
4. muscle contracts when stretched in absence of innervation
5. binding of acetylcholine to nicotine receptors increases Ca2+ influx
- d. muscle contracts when stretched in absence of innervation