Question

How do neurotransmitters communicate with postsynaptic neurons?

Answer 1

Through Synapse.

Explanation:

Synapse is a microscopic gap between axon ending of pre-synaptic neuron and dendrites of post-synaptic neuron. Nerve impulse is transmitted from one neuron to the next through synapse.
Mechanism of Transmission:-

• An impulse reaches a synaptic knob.
• The synaptic knob has synaptic vesicles which are filled with neurotransmitters.
• These vesicles fuse with pre-synaptic membrane thus neurotransmitters are released into synaptic cleft(gap).
• The post-synaptic membrane have receptors. The neurotransmitters molecules bind to these receptors.
  -The neurotransmitter changes the permeability of the post synaptic neuron for N`a^+` ions(b y opening sodium gates).
  This change of ion start an action potential in the post-synaptic neuron which means the nerve impulse have been transmitted.
  I hope it will help you.