Nerve impulses are transmitted in reflex action in the following direction:
Correct answer: C. From Receptors to the CNS and from CNS to the Effectors.
- A. From CNS to Effectors and from CNS to the Receptors.
- B. From Effectors to CNS and from CNS to the Receptors.
- C. From Receptors to the CNS and from CNS to the Effectors.
- D. From CNS to Receptors and from Effectors to CNS.
Explanation
In a reflex arc the impulse travels from the receptor along the sensory neuron to the CNS, and then from the CNS along the motor neuron to the effector. Every other option has the impulse moving backwards along at least one neuron, which a synapse does not allow.
This question appeared on the UHS MDCAT 2026 paper, which you can sit online with every answer explained.
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About Reflexes and the Reflex Arc
A reflex arc shows how a rapid, automatic response travels from a receptor through a sensory neuron, relay neuron and motor neuron to an effector. The topic covers synapses, the spinal cord's role, and the difference between an involuntary reflex action and a slower voluntary response.
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