A family of a client with a subarachnoid hemorrhage asks the nurse for an explanation of this diagnosis. The nurse explains that the client is bleeding into what area of the brain?

Correct Answer: C

Rationale: Subarachnoid hemorrhage is bleeding into the subarachnoid space (between arachnoid and pia mater). Other options describe epidural or ventricular bleeds.

Correct Answer: B

Rationale: Delta waves (slow, high-amplitude) occur in deep sleep in healthy individuals and can appear in awake brain-damaged patients, indicating dysfunction. Alpha (relaxed), beta (alert), and theta (light sleep) have different contexts.

Correct Answer: A

Rationale: The choroid plexus is a network of capillaries in the ventricles (third and fourth) that produces cerebrospinal fluid (CSF). The circle of Willis is an arterial ring, and the other terms are incorrect or fictional.

Correct Answer: C

Rationale: Theta waves (4-8 Hz) in adults while awake often indicate brain dysfunction or damage, common in pathological states. They occur normally in children or during light sleep/dreaming, but not typically in healthy awake adults.

Correct Answer: C

Rationale: Astrocytes form part of the blood-brain barrier, with their end-feet surrounding capillaries, regulating substance passage. Schwann cells are in the PNS, microglia are immune cells, and neurolemma is PNS-specific.