<prompt> Which of the following nerves are affected after spinal anaesthetic blockMotor and sensory onlySensory and autonomic nerve onlySensory nerves onlySensory, autonomic and motor nerves  <response>: Local anesthetics block generation and conduction of nerve impulse at all part of neuron where they come in contact, without causing structural damage. Thus not only sensory but motor impulses and autonomic control is also interrupted. 