Which type of neuron comprises the largest group of neurons in the CNS by the counts provided?

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Multiple Choice

Which type of neuron comprises the largest group of neurons in the CNS by the counts provided?

Interneurons form the vast network that runs throughout the CNS, creating local circuits that process and integrate information. They stay entirely within the brain and spinal cord, linking sensory pathways to motor outputs and connecting different brain regions to coordinate complex processing. This dense, widespread network supports everything from simple reflexes in the spinal cord to intricate cortical computations, so their numbers exceed those of sensory neurons (which carry information from the body to the CNS) and motor neurons (which carry commands from the CNS to muscles). While pyramidal neurons are a major and abundant cortical cell type, the total count of interneurons across the CNS is much higher. That’s why interneurons comprise the largest group of neurons by count.

Interneurons form the vast network that runs throughout the CNS, creating local circuits that process and integrate information. They stay entirely within the brain and spinal cord, linking sensory pathways to motor outputs and connecting different brain regions to coordinate complex processing. This dense, widespread network supports everything from simple reflexes in the spinal cord to intricate cortical computations, so their numbers exceed those of sensory neurons (which carry information from the body to the CNS) and motor neurons (which carry commands from the CNS to muscles). While pyramidal neurons are a major and abundant cortical cell type, the total count of interneurons across the CNS is much higher. That’s why interneurons comprise the largest group of neurons by count.

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