Question
Which part of a neuron carries the nerve impulse away from the cell body?
The correct answer is
Axon
Neuron Structure and Nerve Impulse Transmission
Neurons are specialized cells responsible for transmitting information throughout the body via electrical and chemical signals, known as nerve impulses. The structure of a neuron includes a cell body (soma), dendrites, and an axon.
Identifying the Axon's Function
The question asks to identify the part of the neuron that carries the nerve impulse away from the cell body. Let's examine the roles of the key parts:
- Dendrites: These branched extensions receive signals from other neurons and transmit them towards the cell body.
- Cell Body (Soma): Contains the nucleus and integrates incoming signals.
- Axon: This long, slender projection extends from the cell body and carries the nerve impulse (action potential) away from the cell body towards other neurons, muscles, or glands.
- Synapse: This is the junction where a neuron communicates with another cell. It's the site of signal transmission, not the pathway away from the cell body itself.
- Nucleus: Located within the cell body, it controls the cell's activities.
Based on these functions, the axon is the part that carries the nerve impulse away from the cell body.
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Important Questions from Human Body
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- Read the given assertion (A) and reason (R) and select the most appropriate option.
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