ln electrical synapse, impulse from pre-synaptic membrane reaches post-synaptic membrane through:

Neurotransmitter released in synaptic cleft

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Through gap junctions present between two synaptic membranes

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Electrons that jump directly from pre-synaptic membrane to post-synaptic membrane

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Opening of

K^{+}

channels in post-synaptic membrane

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Solution

The correct option is B Through gap junctions present between two synaptic membranes
Electrical synapse have negligible gap between pre-synaptic and post-synaptic membrane. Impulse from pre-synaptic membrane reach post-synaptic membrane through gap junctions present between two synaptic membranes and there is no release of neurotransmitters. In chemical synapse, neurotransmitters are released in synaptic cleft.

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Similar questions

Q. 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?

Q. Synapse is the site for impulse transmission between the of a pre-synaptic neuron and the of the post-synaptic neuron.

Q. 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) Electrical current can flow directly from one neuron into the other across the synapses.
(iii) Transmission of an impulse 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.

Complete the statement by chossing appropriate match among the following.

$\begin{matrix} C o l u m n I & C o l u m n I I A . R e s t i n g p o t e n t i a l & 1. C h e m i c a l s i n v o l v e d i n t h e t r a n s m i s s i o n o f i m p u l s e s a t s y n a p s e s . B . S y n a p t i c c l e f t & 2. G a p b e t w e e n t h e p r e s y n a p t i c a n d p o s t s y n a p t i c n e u r o n s . C . S y n a p t i c c l e f t & 3. E l e c t r i c a l p o t e n t i a l d i f f e r e n c e a c r o s s t h e r e s t i n g n e u r a l m e m b r a n e . D . N e u r o t r a n s m i t t e r s & 4. A n e l e c t r i c a l w a v e l i k e r e s p o n s e o f a n e u r o n t o a s t i m u l a t i o n . \end{matrix}$

Which one of the following is the correct sequence of events that follows in a Synaptic Transmission of Nerve impulse _____.

1. The membrane becomes depolarized

2. Voltage Calcium channels open

3. Release of Synaptic Vesicles

4. Diffusion of neurotransmitter across the synaptic cleft, binding to receptor proteins

on the postsynaptic membrane.

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