What are the basic units that receive, integrate, and transmit information in the nervous system?

What are the basic units that receive, integrate, and transmit information in the nervous system?

• A. Neurons
• B. Glial cells
• C. Axons
• D. Dendrites

Answer: (A)

Neurons are the basic units of the nervous system responsible for information flow. Dendrites act as the receiving branches that pick up signals from other neurons or senses. The cell body integrates these inputs, determining whether the combined signal reaches the threshold to fire. When it does, an action potential travels along the axon, the long fiber that transmits the message away from the neuron to other neurons, muscles, or glands. At the end of the axon, the signal crosses a synapse via neurotransmitters to influence the next cell. Glial cells provide essential support but do not carry out the primary transmission of information. Axons carry the signal; dendrites receive it; the neuron as a whole performs reception, integration, and transmission.

Neurons are the basic units of the nervous system responsible for information flow. Dendrites act as the receiving branches that pick up signals from other neurons or senses. The cell body integrates these inputs, determining whether the combined signal reaches the threshold to fire. When it does, an action potential travels along the axon, the long fiber that transmits the message away from the neuron to other neurons, muscles, or glands. At the end of the axon, the signal crosses a synapse via neurotransmitters to influence the next cell. Glial cells provide essential support but do not carry out the primary transmission of information. Axons carry the signal; dendrites receive it; the neuron as a whole performs reception, integration, and transmission.