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Which is the correct sequence of the components of a reflex arc? 

(a) Receptors→ Muscles→ Sensory neuron→ Motor neuron→ Spinal cord 

(b) Receptors→ Motor neuron → Spinal cord → Sensory neuron → Muscle 

(c) Receptors → Spinal cord → Sensory neuron → Motor neuron → Muscle 

(d) Receptors → Sensory neuron → Spinal cord → Motor neuron → Muscle

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The answer is (d) Receptors → Sensory neuron → Spinal cord → Motor neuron → Muscle

  • Sensory neurons receive signals from receptors.
  • These signals are sent to spinal cord which reaches Muscles through motor neuron.

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