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Which one of the following depicts the correct circuit of a reflex are?

Options

  1. AEffector-sensory neuron-spinal cord-motor neuron-receptor
  2. BReceptor-sensory neuron-spinal cord-motor neurone-ffector
  3. CReceptor-sensory neuron-brain-motor neuron-effector
  4. DSensory neuron-receptor-brain-effector - motor neuron

Correct answer

B. Receptor-sensory neuron-spinal cord-motor neurone-ffector

Step-by-step solution

The reflex arc is a type of neural circuit that begins with a sensory neuron at a receptor and ends with a motor neuron at an effector. Sensory neuron sends electrical impulses to a relay neuron, which is located in the spinal cord of the CNS. Relay neurons connect sensory neurons to motor neurons. In this reflex action brain is not involved.

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