Question

A list of events occurring in the transmission of nerve impulse across the synapse is given below in a random order
(i) Opening of specific ion channels allows the entry of ions, a new action potential is generated in the post-synaptic neuron
(ii) Neurotransmitter binds to the receptor on post synaptic membrane
(iii) Synaptic vesicle fuses with pre-synaptic membrane, neurotransmitter release into synaptic cleft
(iv) Depolarisation of pre-synaptic membrane
(v) Arrival of action potential at axon terminal
Which of the following options represents these events in a correct order?

• A. $(v) \to (iv) \to (iii) \to (ii) \to (i)$
• B. $(i) \to (ii) \to (iii) \to (iv) \to (v)$
• C. $(i) \to (ii) \to (iv) \to (iii) \to (v)$
• D. $(v) \to (iv) \to (iii) \to (i) \to (ii)$

Answer 1

Answer: (A)

Correct answer is (a) $(v) \to (iv) \to (iii) \to (ii) \to (i)$