In a multicellular organism, nerve cells (neurons) perform several critical functions, including:
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Carrying and Transmitting Signals: Neurons are responsible for transmitting electrical and chemical signals throughout the body. They communicate information between different parts of the body and the brain, allowing for responses to stimuli, coordination of movements, and various sensory processes.
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Processing Information: Nerve cells can integrate and process signals from the environment and from other nerve cells. This processing helps in decision-making, reflexes, and overall coordination of bodily functions.
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Regulating Responses: Neurons play a key role in regulating responses to internal and external stimuli, controlling activities such as muscle contractions and glandular secretions.
In summary, the primary function of a nerve cell in a multicellular organism is to carry and transmit signals, which enables communication and coordination within the organism.