The gray matter of the brain consists mainly of neuron cell:

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Autonomic Nervous System NCLEX Questions Questions

Question 1 of 5

The gray matter of the brain consists mainly of neuron cell:

Correct Answer: D

Rationale: Gray matter comprises neuron cell bodies, dendrites, and unmyelinated axons. White matter is myelinated axons.

Question 2 of 5

A client had a motor vehicle accident and is presenting to the emergency department with a head injury. The client is reporting dizziness and is noted by the nurse to have an unsteady gait. Which area of the brain would the nurse consider as likely to be affected when planning further neurological assessments?

Correct Answer: D

Rationale: The cerebellum controls balance and coordination; damage causes dizziness and unsteady gait (ataxia). Diencephalon regulates homeostasis, brainstem vital functions, temporal lobe memory/hearing.

Question 3 of 5

An elderly client has suffered a brainstem hemorrhage. The nurse is aware that the brainstem controls which of the following functions?

Correct Answer: C

Rationale: The brainstem (e.g., medulla) regulates vital functions like blood pressure. Endocrine function is hypothalamic, sleep involves multiple areas, language is cortical.

Question 4 of 5

The third ventricle is located in the:

Correct Answer: B

Rationale: The third ventricle is a midline cavity within the diencephalon, part of the forebrain (prosencephalon). It is not in the cerebrum alone (telencephalon), hindbrain (rhombencephalon), midbrain (mesencephalon), or cerebellum.

Question 5 of 5

Clusters of neuron cell bodies embedded in the white matter of the brain are referred to as:

Correct Answer: A

Rationale: In the CNS, clusters of neuron cell bodies are called nuclei (e.g., basal nuclei). Gyri are cortical ridges, ganglia are PNS neuron clusters, and fasciculi are axon bundles.

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