Question

which are nerve axons that run from peripheral receptors into the cns?

afferent fibers
efferent fibers
effector cells
ganglia

Explanation:

Define the direction of signal transmission

In the Nervous System Structure, nerve fibers are classified based on the direction in which they carry action potentials relative to the Central Nervous System (CNS).

Analyze afferent versus efferent pathways

• Afferent fibers (sensory fibers) carry nerve impulses from peripheral sensory receptors toward the CNS.
• Efferent fibers (motor fibers) carry nerve impulses away from the CNS to peripheral effector organs like muscles or glands.

Evaluate the remaining options

• Effector cells are the target cells (such as muscle or gland cells) that respond to efferent signals, not nerve axons themselves.
• Ganglia are collections of neuron cell bodies located in the Peripheral Nervous System (PNS), not individual axons.

Determine the correct choice

Since the question asks for axons running from peripheral receptors into the CNS, these are sensory pathways, which correspond to afferent fibers.

Answer:

• Afferent fibers (Correct answer)
• Efferent fibers
• Effector cells
• Ganglia