A client who recently experienced a stroke is displaying deficits in speech. Recalling concepts of physiology, which lobes of the brain would the nurse consider to be likely affected by the stroke?

Correct Answer: D

Rationale: Speech deficits (e.g., Broca’s area in frontal lobe, Wernicke’s in temporal lobe) suggest frontal and temporal lobe involvement. Parietal handles sensation, occipital vision.

Correct Answer: A

Rationale: Neuropeptides are small protein-like molecules that act as neurotransmitters or neuromodulators, released by neurons to communicate with other cells. They are not glial cells, not produced by the choroid plexus (which makes CSF), nor nutrients.

Correct Answer: C

Rationale: Commissural fibers (e.g., corpus callosum) connect the right and left cerebral hemispheres. Decussation fibers cross midline, association fibers connect within one hemisphere, and projection fibers link cortex to lower structures.

Correct Answer: B

Rationale: The corpora quadrigemina (superior and inferior colliculi) are in the mesencephalon (midbrain), processing visual and auditory reflexes. Telencephalon is cerebrum, diencephalon includes thalamus, metencephalon is pons/cerebellum.

Correct Answer: D

Rationale: CSF is produced by the choroid plexuses but drains into venous sinuses (e.g., superior sagittal sinus), not the circle of Willis (an arterial structure). Other statements are accurate.