Question

Identify the given pathway and label A, B, C, and D.

• A. Reflex arc, A - Receptor, B - Sensory neuron, C - Motor neuron, D - Relay neuron
• B. Central Nervous System, A - Electrical impulse, B - Sensory neuron, C - Motor neuron, D - Nerve ending
• C. Central Nervous System, A - Electrical impulse, B - Sensory neuron, C - Motor neuron, D - Nerve ending
• D. Neuromuscular junction, A - Cell body, B - Sensory neuron, C - Motor neuron, D - Axon

Answer 1

The correct option is A

Reflex arc, A - Receptor, B - Sensory neuron, C - Motor neuron, D - Relay neuron

The figure shown above represents pathway taken during a reflex action. This path is better known as a reflex arc. The receptor is the place where the impulse is sensed. It then travels through sensory neuron to the spinal cord. There it gets processed and further transmitted through relay neuron and finally, via motor neuron, it goes to the effector muscles.
Reflex arc: A - Receptor, B - Sensory neuron, C - Motor neuron, D - Relay neuron