Why conduction of nerve impulse across the synapse is always unidirectional from axon to dendron?

Explanation

### Step-by-Step Solution:

1. **Understanding Synapse**:
- A synapse is a junction between two neurons where the transmission of nerve impulses occurs. It consists of the axon terminal of one neuron and the dendrite of another, separated by a small gap known as the synaptic cleft.

2. **Structure of the Axon Terminal**:
- At the axon terminal, there are synaptic vesicles that contain neurotransmitters. These neurotransmitters are essential for transmitting signals between neurons.

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