why aren't the neurons directly connected to each other? what is the need of a synapse?

Asked by Pooja | 20th Jul, 2015, 07:48: PM

Expert Answer:

  • Synapse allows a neuron to pass the nerve impulse to the adjacent neuron.
  • Synapse is a chain of several processes. When pre-synaptic neuron pass the nerve impulse to the axon terminals at their ends, the axon terminal secrete neurotransmitters.
  • These neurotransmitters carry the impulse in the form of chemical signal to the adjacent neuron.
  • There are binding sites present at the dendrites of the post-synaptic neuron to which these neurotransmitters bind to release or send the impulse further.
  • At the same time a single neuron may have synaptic connections with several neurons at a time. Presence of synapse makes it easy for a neuron to interact with several neurons at a time.

Answered by Hemangi Binny | 21st Jul, 2015, 03:17: PM