The ways in which the words can be meaningfully combined is defined by the language's syntax and grammar. The actual meaning of words and combinations of words is defined by the language's semantics.
A nerve impulse is an electrical signal that travels along an axon. There is an electrical difference between the inside of the axon and its surroundings, like a tiny battery. When the nerve is activated, there is a sudden change in the voltage across the wall of the axon, caused by the movement of ions in and out of the neuron.
  The electrical messages, called nerve impulses, may travel as fast  as 150m per sec or as slow as 0.2m/s a nerve impulse is an electrical signal that travels along the axon of a neurone to and from receptor.he path a nerve impulse travels in order is the following: 1. Stimulus 2. Sensory receptor 3. Sensory neuron 4. Central Nervous System (CNS) interneurones 5. Motor â¦ neuron 6. Muscle/Effector (whatever part of the body the stimulus is going to) 7.