[Campbell Biology P.1139] Which of the following statements accurately describes a key struct... | Practice Question
Which of the following statements accurately describes a key structural difference between the motor system and the autonomic nervous system, as depicted in Figure 49.8?
A: The motor system pathway involves a single neuron from the CNS to the target, whereas the autonomic nervous system pathway involves two neurons with a ganglion.
B: The motor system exclusively targets smooth muscle, while the autonomic nervous system targets skeletal muscle.
C: The motor system utilizes both acetylcholine and norepinephrine as neurotransmitters, while the autonomic nervous system primarily uses only acetylcholine.
D: The motor system does not have ganglia, but the autonomic nervous system has ganglia located within the CNS.
Explanation
Figure 49.8 clearly illustrates that the motor system pathway consists of a single neuron extending from the CNS to the skeletal muscle target. In contrast, the autonomic nervous system pathway involves two neurons preganglionic and postganglionic with a synapse occurring in a ganglion located outside the CNS.