as the stimulus grows stronger, the neuron’s cell body triggers the neuron to initiate an impulse....

As the stimulus grows stronger, the neuron’s cell body triggers the neuron to initiate an impulse. This impulse is called an ____________. It travels the length of the ___________. As the stimulus become more intense, it will become strong enough to generate an ______________.

Some axons are covered by a fatty substance called the ______________. There are small breaks in the _____________. When _____________ reaches one of these breaks, the electrical charge leaps over it. That’s how the ________________ speeds up the transmission of nerve impulses.

The synapse is the ______ between two _________. Chemical messengers called ___________ travel from the axon of a sending neuron to the dendrites of a receiving neuron. When action potential reaches the end of one axon, ____________ are released into the gap between the two cells. This may trigger a _________ in the receiving neuron.

The synapse is the ______ between two _________. Chemical messengers called ___________ travel from the axon of a sending neuron to the dendrites of a receiving neuron. When action potential reaches the end of one axon, ____________ are released into the gap between the two cells. This may trigger a _________ in the receiving neuron.