Question

Choose the correct answer from the alternatives given.
An electrical synapse differs from a chemical synapse in that the electrical synapse:

• A. Has more varied signals crossing the synapse
• B. Has wider clefts between the presynaptic and postsynaptic membranes
• C. Is found only in vertebrates
• D. Is much faster, having essentially instantaneous transmission

Answer 1

The correct option is D Is much faster, having essentially instantaneous transmission

The speed of a nerve impulse varies with the type of nerve impulse the nervous system is sending. Some signals such as those for muscle position, travel at speed up to 119 m/s. Nerve impulse such as pain signals travels slower at 0.61 m/s. Touch signals travel at speeds of 76.2 m/s.

So, the correct answer is 'is much faster, having essentially instantaneous transmission'.