In the process of an experiment, a specimen of neuromuscular tissue of a frog had been processed with a curariform agent, which resulted in disappearance of muscle contractions in response to electrical stimulation of the nerve. What function of the muscle cell membrane is disturbed by curariform agents?

Варіанти відповіді

1. Maintenance of the cell’s internal structure, its cytoskeleton
2. Maintenance of the barrier between the cellular environment and interstitial fluid
3. Mediator reception in the neuromuscular junction
4. Maintenance of electric potentials on the both sides of the membrane
5. Different permeability to different substances