Which one of the following represents the correct pathway of an impulse along a reflex arc?
A) effector, association neuron, sensory neuron, motor neuron, receptor
B) effector, sensory neuron, association neuron, motor neuron, receptor
C) receptor, association neuron, sensory neuron, motor neuron, effector
D) receptor, motor neuron, association neuron, sensory neuron, effector
E) receptor, sensory neuron, association neuron, motor neuron, effector

Question

Quizplus · Accepted Answer

The correct pathway of an impulse along a reflex arc is receptor, sensory neuron, association neuron, motor neuron, effector. This is because a reflex arc involves the stimulation of a sensory receptor which triggers an action potential that travels along the sensory neuron to the spinal cord. The action potential then synapses with an association neuron which in turn synapses with a motor neuron. The action potential then travels along the motor neuron to the effector, which is the muscle or gland that responds to the stimulus. Therefore, option E represents the correct pathway of an impulse along a reflex arc.

Which One of the Following Represents the Correct Pathway of an Impulse