When testing a client's triceps reflex, the nurse is testing:

Correct Answer: B

Rationale: The triceps reflex is a somatic reflex (skeletal muscle response) via spinal cord (C6-C7), not autonomic, cranial nerve, or brainstem-mediated.

Correct Answer: B

Rationale: Parkinson’s disease results from basal ganglia dysfunction (e.g., dopamine loss in substantia nigra), affecting motor control. The pons, parietal lobe, and thalamus have other roles; 'corpus striatum' is part of basal ganglia but less specific.

Correct Answer: B

Rationale: The corpus callosum connects cerebral hemispheres and has no autonomic role like blood pressure regulation. Pons and medulla regulate respiration, thalamus relays pain, and hypothalamus controls temperature.

Correct Answer: C

Rationale: The cerebral aqueduct (in the midbrain) connects the third ventricle to the fourth ventricle, allowing CSF flow. Lateral ventricles connect to the third via the interventricular foramina.

Correct Answer: C

Rationale: The cerebellum coordinates movement and balance; trauma here causes tremors, ataxia (irregular gait), and dysarthria (halting speech). The cerebrum handles cognition, pons respiration, thalamus sensation, and hypothalamus homeostasis.