Question

what are a synapse and how in a neuron cell crest electric impulse created

Answer 1

Electrical impulse gets converted into chemical signal at the nerve terminal or synapse. When a nerve impulse reaches the nerve terminal or synapse, it stimulates the fusion of synaptic vesicles (pre and post synaptic vesicles) and release of neurotransmitter. The released neurotransmitter binds to specific receptors present on post synaptic neuron. ?It opens the ion channel on the plasma membrane, allowing the entry of ions that generates a new action potential in post synaptic neuron.

Answer 2

the gap between two nerve ending is called synapse. the electric impulse are created by stimulus