One of the two main subdivisions of the autonomic nervous system, having cell bodies of preganglionic neurons in the lateral gray columns of the thoracic segment.

Correct Answer: A

Rationale: The sympathetic nervous system, a subdivision of the ANS, has preganglionic neurons in thoracic and lumbar spinal cord, preparing the body for fight-or-flight. Parasympathetic conserves energy, ANS is broader, and enteric plexuses control digestion.

Correct Answer: C

Rationale: Ependymal cells line ventricles, produce CSF, and aid its circulation. Neurology is a field, nerve fiber is an axon, and neurotransmitter is a chemical.

Correct Answer: C

Rationale: An axosomatic synapse occurs from an axon to a neuron’s cell body. Oligodendrocytes are glia, agonist is a drug term, and SNS is a system.

Correct Answer: A

Rationale: Purkinje cells are specialized muscle fibers in the heart’s ventricles, conducting electrical signals for contraction. GBS is a disorder, dendrites and axon terminals are neuron parts.

Correct Answer: A

Rationale: The parasympathetic nervous system (craniosacral) conserves energy, with preganglionic neurons in the brainstem and sacral cord. Agonist is a drug term, divergence is a synapse pattern, and sensory neurons are afferent.