Axons represent the most elongated component of the ____________?
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Answer: B. axon
Explanation
Axons are specialized cellular extensions designed specifically to carry electrical nerve impulses away from the cell body. Their elongated structure enables neurons to communicate effectively with distant targets across the nervous system. Among all neuronal components, axons routinely achieve the greatest physical length within neural circuits. A typical neuron consists of a cell body, branching dendrites, and a single long conducting axon fiber. Some human motor axons extend all the way from the spinal cord down to the muscles of the foot. Many axons are wrapped in insulating myelin to accelerate the electrical signal propagation along their length.
Dendrites are typically short, branching extensions that receive incoming chemical signals from neighboring neurons. The cell body, or soma, contains the cellular nucleus and metabolic machinery but is not elongated. Synapses are specialized junction sites between neurons rather than physical cellular projections or components.
- Subject
- Psychology
- Category
- Psychology
- Topic
- —
- Difficulty
- medium
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