Which neurons carry signals from the brain or spinal cord to muscles or glands?

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Study for the PLTW Medical Detectives Exam. Prepare with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your test and excel!

Multiple Choice

Which neurons carry signals from the brain or spinal cord to muscles or glands?

Explanation:
Motor neurons are the commands carriers that travel from the brain or spinal cord to the body’s effectors. They are the efferent neurons, with their cell bodies in the CNS and axons extending to muscles or glands to trigger movement or secretion. This directional flow—from CNS to the periphery—is what makes them the correct choice. Sensory neurons carry signals from sensory receptors to the CNS, nerves are bundles of many neurons, and dendrites are the receiving parts of a neuron, not the pathways that send signals to muscles or glands.

Motor neurons are the commands carriers that travel from the brain or spinal cord to the body’s effectors. They are the efferent neurons, with their cell bodies in the CNS and axons extending to muscles or glands to trigger movement or secretion. This directional flow—from CNS to the periphery—is what makes them the correct choice. Sensory neurons carry signals from sensory receptors to the CNS, nerves are bundles of many neurons, and dendrites are the receiving parts of a neuron, not the pathways that send signals to muscles or glands.

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