Question

The junction between two nerve cells is ______

Answer 1

Hint: The junction is formed by the axonal part of one neuron and the dendritic part of another neuron and it has three components.

Complete answer:
Axon is branched terminally into smaller branches. These smaller branches have knobbed structures known as synaptic knobs or end bulbs of axon terminals. These synaptic knobs contain mitochondria, calcium channels, and synaptic vesicles containing neurotransmitters.
dendrons are short, tapering, and branched processes. The membrane of synaptic knobs is thickened and known as the presynaptic membrane and the membrane of dendrites is also thickened to form the postsynaptic membrane. These two membranes are separated by a gap known as synaptic cleft, this forms the junction between two nerve cells. Together the presynaptic membrane, postsynaptic membrane, and synaptic cleft form a synapse.
Additional Information:

-The synapse consists of three main parts- presynaptic membrane, synaptic cleft, and postsynaptic membrane.
-Neurotransmitters of the vertebrate nervous system include acetylcholine and noradrenaline mainly.
-Synapse can only transmit signals in one direction, this is because the dendrites do not produce any neurotransmitter and hence signals cannot go in the reverse direction.
-Synaptic Delay- transmission of a signal between two neurons through synapse is comparatively slower than the signal transmission along the neuronal membrane, this delay is known as a synaptic delay.
-Synaptic fatigue- This happens due to repeated stimulation of the presynaptic membrane which gradually results in depletion of neurotransmitter reserves. So momentarily transmission stops and during this duration, neurotransmitters are reformed.

So, the correct answer is, “The junction between two nerve cells is a synapse.”

Note:
It should be remembered that the transmission of a signal across the whole length of nerve cells occurs with the help of nodes of Ranveer and transmission of signals between two neurons occurs by synapse.