Which of these represents the flow of information in a spinal reflex arc in the correct order?
A) spinal nerve→sensory neuron→spinal cord→interneuron→effector→spinal nerve→motor neuron
B) motor neuron→spinal nerve→spinal cord→interneuron→sensory neuron→spinal nerve→effector
C) sensory neuron→spinal nerve→interneuron→motor neuron→spinal cord→spinal nerve→effector
D) sensory neuron→spinal nerve→spinal cord→interneuron→motor neuron→spinal nerve→effector
E) spinal nerve→motor neuron→spinal cord→interneuron→effector→sensory neuron→spinal nerve Spinal nerves are sometimes referred to as "mixed nerves" because they convey both sensory and motor signals.

Question

Quizplus · Accepted Answer

The correct order of a spinal reflex arc is as follows: sensory neuron → spinal nerve → spinal cord → interneuron → motor neuron → spinal nerve → effector. This is because the sensory neuron detects a stimulus and sends an impulse through the spinal nerve to the spinal cord. The interneuron processes the information and sends a response through the motor neuron, which sends an impulse out to the effector (muscle or gland) through another spinal nerve. Thus, D is the correct choice in which the information flow is in the correct order.

Which of These Represents the Flow of Information in a Spinal