Answer: CNS to muscles/glands (effectors).
- A CNS to muscles/glands (effectors)
- B Muscles directly back to the brain for processing
- C Sensory organs toward the brain for interpretation
- D Signals confined only within the spinal cord itself
Correct answer: A. CNS to muscles/glands (effectors)
Explanation: Motor (efferent) neurons carry signals from the CNS to muscles and glands, causing them to respond.
Structure of a neuron. Image: LadyofHats (Mariana Ruiz), Public Domain, via Wikimedia Commons.
Concept context
Brain, spinal cord, neurons, reflex arcs, and sense organs.