Before an impulse can cross the synaptic gap between neurons,the impulse must be
A)converted into an electrical signal.
B)processed by a glial cell.
C)converted into a chemical signal.
D)myelinated within the terminal buttons.

Question

Quizplus · Accepted Answer

The impulse, which is an electrical signal, cannot cross the synaptic gap directly. Instead, it triggers the release of chemicals called neurotransmitters from the terminal buttons of the presynaptic neuron into the synaptic gap. These neurotransmitters then bind to receptor sites on the postsynaptic neuron, generating new electrical signals to pass the message along. Therefore, the impulse must be converted into a chemical signal in order to cross the synaptic gap.

Before an Impulse Can Cross the Synaptic Gap Between Neurons,the