ATI RN
Nervous System Questions Questions
Question 1 of 5
The pons is involved in:
Correct Answer: A
Rationale: The pons (brainstem) regulates sleep and arousal via the reticular formation.
Question 2 of 5
The primary effect of cocaine on the nervous system is that cocaine blocks the re-uptake of:
Correct Answer: A
Rationale: Cocaine blocks monoamine reuptake (dopamine, norepinephrine, serotonin), increasing synaptic levels. 'Transamines' is a typo, catecholamine is a monoamine subset, and monoamine oxidase degrades them.
Question 3 of 5
The drug ___ blocks the reuptake of serotonin into presynaptic axons.
Correct Answer: A
Rationale: Prozac (fluoxetine), an SSRI, blocks serotonin reuptake, increasing its synaptic presence. Valium/Xanax affect GABA, Deprenyl inhibits MAO.
Question 4 of 5
Which of the following types of cells line the ventricles and spinal cord?
Correct Answer: C
Rationale: Ependymal cells line ventricles and the spinal canal, aiding CSF production/circulation. Astrocytes support, Schwann cells are PNS, oligodendrocytes myelinate.
Question 5 of 5
Which among cranial nerves are mixed nerves that supply parasympathetic to viscera of thorax and abdomen?
Correct Answer: A
Rationale: The vagus nerve (CN X) is a mixed nerve with parasympathetic innervation to thoracic and abdominal viscera. Trigeminal (CN V) is sensory/motor for the face, accessory (CN XI) is motor, and abducens (CN VI) controls eye movement.