Which of the following cytoplasmic extensions carry the message toward the cell body___________?
Correct answer: A. Dendrites
- A. Dendrites
- B. Axon
- C. Both of these
- D. none of these
Explanation
Dendrites receive signals and carry them toward the cell body, whereas the axon usually carries impulses away from it. The likely mistake is choosing the axon because it is also a cytoplasmic extension, but its usual direction is away from the cell body.
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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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