Holistic Nursing Exam 2 Practice

Which conveys info from receptors in the periphery to the CNS?

Neurons Efferent neurons Afferent nervous system Skeletal muscles

Correct Answer:

Afferent nervous system

Explanation:

This question tests how sensory information travels to the brain. Information from receptors in the periphery is carried to the central nervous system by the afferent nervous system. These are the sensory pathways that bring signals such as touch, temperature, pain, and proprioception from skin, organs, and muscles up to the spinal cord and brain for processing. In contrast, efferent pathways carry commands from the CNS out to effectors like muscles and glands, not toward the CNS. Skeletal muscles are targets of those motor commands, so they don’t convey sensory information to the CNS. While neurons are the cells that transmit signals, the key distinction here is the direction of transmission: afferent pathways move information toward the CNS.

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