Q.

Which of the following is the correct sequence of events in a reflex arc?

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a

Receptor, sensory neuron, motor neuron, effector

b

Effector, sensory neuron, receptor, motor neuron

c

Receptor, motor neuron, sensory neuron, effector

d

Motor neuron, receptor, sensory neuron, effector 

answer is A.

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Detailed Solution

The pathway taken by a nerve impulse in a reflex action is called reflex arc. The correct sequence of the components in a reflex arc is given below:

Receptors → Sensory neuron → Spinal cord → Motor neuron → Muscle

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