As you study for your neuroscience exam, you feel a tickle on your arm. You look and see a large spider and you jerk your arm automatically. What might be the neural path for this action?
A) sensory neuron - interneuron - motor neuron - muscle
B) interneuron - sensory neuron - motor neuron - muscle
C) motor neuron - sensory neuron - interneuron - muscle
D) sensory neuron - motor neuron - interneuron - muscle
E) motor neuron - interneuron - sensory neuron - muscle

Question

As you study for your neuroscience exam, you feel a tickle on your arm. You look and see a large spider and you jerk your arm automatically. What might be the neural path for this action?
A) sensory neuron -> interneuron -> motor neuron -> muscle
B) interneuron -> sensory neuron -> motor neuron -> muscle
C) motor neuron -> sensory neuron -> interneuron -> muscle
D) sensory neuron -> motor neuron -> interneuron -> muscle
E) motor neuron -> interneuron -> sensory neuron -> muscle

Quizplus · Accepted Answer

The correct neural path for an automatic response to a stimulus (like feeling a tickle and seeing a spider) involves a sensory neuron detecting the stimulus, an interneuron processing the information in the spinal cord or brain, and a motor neuron carrying the command to the muscles to react, hence A) sensory neuron -> interneuron -> motor neuron -> muscle is the correct sequence.

As You Study for Your Neuroscience Exam, You Feel a Tickle