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Question

One of the following gives the correct sequence of the components in a reflex arc. This is :

(a) Receptors Muscle  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


Solution

Answer :

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

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


Biology
Science for Tenth Class - Part III - Biology
Standard X

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