ATI RN
Questions About Nervous System Questions
Question 1 of 5
Acetylcholine is a neurotransmitter that provides for communication between muscles and nerves. When there is a problem with the interaction between acetylcholine and the acetylcholine receptor sites on the muscles, which condition(s) can occur?
Correct Answer: D
Rationale: Myasthenia gravis (autoimmune attack on acetylcholine receptors) and botulism (toxin blocks acetylcholine release) both involve acetylcholine dysfunction at the neuromuscular junction. Multiple sclerosis affects CNS myelin, not this interaction, so 'A and B' is correct.
Question 2 of 5
Any disorder that affects the nervous system but particularly a disorder of a cranial or spinal nerve. An example is facial neuropathy (Bell's palsy), a disorder of the facial (VII) nerve.
Correct Answer: D
Rationale: Neuropathy is a disorder affecting nerves, such as Bell’s palsy (facial nerve). Synaptic cleft is a synapse gap, parasympathetic is a system, and ACh is a neurotransmitter.
Question 3 of 5
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.
Question 4 of 5
The part of the nervous system that lies outside the central nervous system, consisting of nerves and ganglia.
Correct Answer: D
Rationale: The peripheral nervous system (PNS) includes nerves and ganglia outside the CNS. Neuroblastoma is a tumor, ANS is a PNS subdivision, and action potentials are signals.
Question 5 of 5
Neuroglial cell that covers choroid plexuses and produces cerebrospinal fluid (CSF); it also lines the ventricles of the brain and probably assists in the circulation of CSF.
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.