Anatomy & Physiology Question #40


What does a reflex arc contain?


  1. Sensory neuron
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  2. Sensory reception
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  3. Motor neuron
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  4. Gray matter
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  5. White matter
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The correct answers are A, B, and C. A reflex occurs when nerve impulses travel over a simple neuron. It elicits a pathway called a reflex arc. Reflex arcs have five basic systems: receptors, sensory neurons, interneurons, motor neurons, and effectors. A reflex arc does not contain gray or white matter.

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