Principles Of Chiropractic Practice Test

Which statement correctly distinguishes afferentation from efferentation?

Afferentation carries motor commands away from the CNS Efferentation carries sensory information to the CNS Afferentation and efferentation are the same Afferentation carries sensory information to the CNS; efferentation carries motor commands from the CNS

Correct Answer:

Afferentation carries sensory information to the CNS; efferentation carries motor commands from the CNS

Explanation:

Understanding afferentation and efferentation hinges on direction relative to the central nervous system. Afferentation refers to sensory information traveling toward the CNS, while efferentation refers to motor commands traveling away from the CNS to muscles or glands. The correct statement captures this: sensory input is carried to the CNS, and motor output is carried from the CNS to effectors. For example, when you touch something hot, sensory nerves bring the signal to the spinal cord (afferent path), and the CNS sends a motor command to withdraw the hand (efferent path). The other ideas mix up the direction or imply they’re the same, which they are not.

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