Type of neurons found exclusively in CNS are_____________?
Correct answer: C. Associative neurons
- A. Sensory neurons
- B. Motor neurons
- C. Associative neurons
- D. None of these
Explanation
Associative neurons, also called interneurons, connect sensory and motor pathways within the central nervous system. They are found in the brain and spinal cord and generally do not extend into peripheral nerves. The likely alternative is motor neurons, but motor neurons carry commands from the CNS to effectors and can extend into the peripheral nervous system.
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Neurons receive and transmit information through dendrites, the cell body and axons. The topic explains resting potential, depolarization, repolarization, refractory periods and saltatory conduction, followed by synaptic transmission through neurotransmitters. An action potential is distinct from the graded potential produced at a receptor.
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