Read the following statements and choose the following option: 1. Neurotransmitters are involved in the impulse transmission in spinal cord 2. Sodium potassium pump transports 3 potassium inside the cell 3. Neurotransmitters bind to their specific receptors 4. The rise in the stimulus-induced permeability to Na+ is long lived. 5. The electrical potential difference across the resting plasma membrane is called as the