Question

Nerve impulse through synapse is

• A. Unidirectional
• B. Bidirectional
• C. Multidirectional
• D. None of the above

Answer 1

The correct option is A Unidirectional

The synapse refers to the junction between the axon terminal of the presynaptic neurons and the dendrites of the post-synaptic neurons. As the neurotransmitters from the presynaptic neuron are deposited into the synaptic cleft, these are sensed by the receptors present on the dendrites of the post-synaptic neurons. In this way, the impulse can travel only in one direction, that is, from the axon terminal of the presynaptic neuron to the dendrites of the post-synaptic neuron.

Hence, the correct answer is 'Unidirectional'