Which of the following transmits nerve impulse from receptors to central nervous system?
Correct answer: A. Sensory neuron
- A. Sensory neuron
- B. Motor neuron
- C. Associative neuron
- D. none of these.
Explanation
Sensory neurons carry impulses from receptors toward the central nervous system, forming the afferent pathway. A motor neuron is the likely alternative for students who confuse direction, because it carries commands from the CNS to effectors.
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About Neurons and Nerve Impulse
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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