Which of the following statements is/are incorrect about the electrical synapse ?
(i)At electrical synapses, the membranes of pre and post synaptic neurons are in very close proximity.
(ii)Electricity current can flow directly from one neuron into the other across the synapses.
(iii)Transmission of an inpulse across electrical synapses is very similar to impulse conduction along single axon.
(iv)Electrical synapses pass electrical signal between cells with the use of Ach.
(v)Electrical synapses are fast.
(vi)Electrical synapses are rare in our system.

Options

A. (ii),(iv) and (v)
B. (i) and (iii)
C. (iv) only
D. (i),(v) and (vi)

Answer

C

Explanation

At electrical synapse, the transfer of impulse occurs by purely electrical means without involving any neurotransmitter.