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Question
The part of the neuron through which information travels as an impulse is
The part of the neuron through which information travels as an impulse is
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Solution
The correct option is B Axon
Dendrites are the small extension of nerve cells that receive signals from sensory receptors or other neurons. The long extension of the cell body of the nerve cell is called as axon that serves to conduct the nerve impulse away from the cell body. Movement of Na+ ions inside the axon membrane and that of K+ ions outside the membrane via ATP energized pump generates action potential across the axon membrane which in turn generates the nerve impulse. Cell body/cyton /soma is the metabolic center of the nerve cell where the metabolic contents are manufactured. It is not involved in nerve impulse conduction. Nerve endings are the structures formed at the axon terminal. They are termed as free nerve endings (sensory nerve endings) or motor end plates. Thus, the correct answer is option D.
Dendrites are the small extension of nerve cells that receive signals from sensory receptors or other neurons. The long extension of the cell body of the nerve cell is called as axon that serves to conduct the nerve impulse away from the cell body. Movement of Na+ ions inside the axon membrane and that of K+ ions outside the membrane via ATP energized pump generates action potential across the axon membrane which in turn generates the nerve impulse. Cell body/cyton /soma is the metabolic center of the nerve cell where the metabolic contents are manufactured. It is not involved in nerve impulse conduction. Nerve endings are the structures formed at the axon terminal. They are termed as free nerve endings (sensory nerve endings) or motor end plates. Thus, the correct answer is option D.
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