Which is true of a reflex arc?
a.
it does not involve the brain and spinal cord
b.
it always consists of an afferent and an efferent neuron
c.
it always consists of an afferent neuron, an efferent neuron, and an interneuron
d.
it always consists of an afferent neuron, an efferent neuron, the brain, and the spinal cord
Answer: B