What type of neuron carries impulses away from the central nervous system to an effector?

Prepare for the IB Diploma Biology Test. Study with flashcards and multiple choice questions, each question offers hints and explanations. Get ready to ace your exam!

The type of neuron that carries impulses away from the central nervous system (CNS) to an effector is a motor neuron. Motor neurons play a crucial role in the nervous system by transmitting signals from the CNS, primarily the brain and spinal cord, to muscles or glands, which are the effectors responsible for carrying out an action or response.

In the context of the nervous system, motor neurons enable voluntary and involuntary movements. For example, when you decide to move your arm, motor neurons deliver the signal from your brain to the muscles in your arm, resulting in movement. Similarly, when reflex actions occur, motor neurons facilitate immediate responses to stimuli, bypassing the brain for quicker reaction.

The other types of neurons listed serve different functions. Interneurons connect neurons within the CNS and play a role in processing information rather than transmitting signals to effectors. Sensory neurons carry impulses from sensory receptors to the CNS, allowing for the perception of stimuli rather than initiating a response. Multipotent cells refer to progenitor cells that have the potential to differentiate into various types of cells, not specifically related to the transmission of nerve impulses.

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