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.

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.

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.

Correct Answer: D

Rationale: All listed structures are involved in motor functions: red nucleus (midbrain motor relay), cerebellum (coordination), basal ganglia (movement refinement), precentral gyrus (primary motor cortex). 'None of the above' is incorrect.

Correct Answer: D

Rationale: CSF circulates in the ventricles, central canal of the spinal cord, and subarachnoid space, cushioning the CNS. The epidural space and dural sinuses do not normally contain CSF.