It is false that the cerebrum:

Correct Answer: B

Rationale: The cerebrum does comprise ~80% of brain mass, has a convoluted gray matter cortex, and is the telencephalon. However, it has four lobes per hemisphere (frontal, parietal, temporal, occipital), not 'four paired lobes' as a distinct entity, making B false.

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.