Select the incorrect statement regarding synapses:

Select the incorrect statement regarding synapses:
  1. Electrical current can flow directly from one neuron into the other across the electrical synapse
  2. Chemical synapses use neurotransmitters
  3. Impulse transmission across a chemical synapse is always faster than that across an electrical synapse
  4. The membranes of presynaptic and postsynaptic neurons are ibn close proximity in an electrical synapse

Solution

The major difference between a chemical and an electrical synapse is that in a chemical synapse, the nerve impulse is transmitted chemically via neurotransmitters, whereas in an electrical synapse a nerve impulse is transmitted electrically via channel proteins.

Chemical synapses use the release of chemical neurotransmitters to propagate signals from one neuron (presynaptic) to another (postsynaptic). The electrical synapses are specialised connections between neurons that facilitate direct ionic and small metabolite communication. Hence, the electrical synapses are very faster and are found in all nervous systems, especially in the human brain.

Asked in: NEET 2022 (Phase 1)

Practice more Neural Control and Coordination questions on Aicharya