Here is an explanation along with a simple diagram of how nerve cells (neurons) help in the transmission of impulses: Nerve cells convey information electrically within the cell and chemically between cells. A neuron has dendrites that receive stimuli, a cell body that processes them, and an axon that carries the nerve impulse away towards other neurons or effector cells. The axon is often covered with a myelin sheath which speeds up the impulse by allowing it to jump between nodes (nodes of Ranvier). Transmission steps:

1. Dendrites receive a stimulus (e.g., from another neuron or sensory input).
2. This stimulus generates an electrical impulse by changing the membrane potential through ion movements.
3. The impulse travels as an action potential along the axon membrane.
4. When the impulse reaches the axon terminals, it triggers the release of neurotransmitters into the synapse (gap).
5. Neurotransmitters cross the synaptic gap to the dendrites of the next neuron or to muscles/glands, thus continuing the signal.

Diagram:

Dendrites
   /|\
  / | \
 /  |  \
[Cell Body] -----> Axon -----> Axon Terminals

This mechanism allows rapid communication necessary for coordination within the body, such as reflex actions or sensing changes in the environment.

Would a more detailed diagram or further explanation on any step be helpful?