Which of the following is true? the peripheral nervous system (pns) is located outside the brain and spinal cord. the central nervous system (cns) is composed of the brain and spinal cord. a nerve is a bundle of axons (nerve fibers) that lies outside the brain and spinal cord. ganglia are small masses consisting primarily of neuron cell bodies located outside the brain and spinal cord. all of these choices are correct.

Imagine a person stepping on a pin and pulling his or her foot away. look at the reflex arc of this scenario below. which statement best describes the image? a)the sensory nerve carries the signal from the effector to the interneuron, and the motor neuron carries the signal to the receptor. b)the motor nerve carries the signal from the receptor to the interneuron, and the sensory neuron carries the signal to the effector. c)the sensory nerve carries the signal from the receptor to the interneuron, and the motor neuron carries the signal to the effector. d)the sensory nerve carries the signal from the receptor to the motor neuron, and the interneuron carries the signal to the effector.