Which sequence best represents the course of an impulse over a reflex arc?
a.
receptor, synapse, sensory neuron, motor neuron, effector
b.
effector, sensory neuron, synapse, motor neuron, receptor
c.
receptor, motor neuron, synapse, sensory neuron, effector
d.
receptor, sensory neuron, interneuron, motor neuron, effector
Answer: D