Question

Choose the correct answer from the four options given below:

A reflex arc is best is best described as movement of stimuli from

• A. Receptor cell, sensory neuron, relaying neuron, effector muscles
• B. Receptor cell, efferent nerve, relaying neuron, muscles of the body
• C. Receptor cell, spinal cord, motor neuron, relaying neuron
• D. Receptor cell, synapse, motor neuron, relaying neuron

Answer 1

The correct option is A

Receptor cell, sensory neuron, relaying neuron, effector muscles

The correct option is a

Explanation for the correct option

1. The above sequence depicts the reflex arc.
2. The receptor cell detects the stimulus like hot, cold or sting in any part of the body.
3. The stimulus is picked up by the sensory neurons which transmits the information to the relaying neurons present in the spinal cord.
4. These relaying neurons carries information to the effector muscle for the generation of response.

Final answer: A reflex arc is best is best described as movement of stimuli from receptor cell, sensory neuron, relaying neuron, effector muscles.