Final answer:
The diencephalon includes the thalamus and hypothalamus. The thalamus relays sensory information to the cerebral cortex, while the hypothalamus regulates body temperature and controls hunger and thirst.
Step-by-step explanation:
The diencephalon is a region of the brain that includes the thalamus and hypothalamus. The thalamus acts as a relay station, transmitting sensory information from the spinal cord to the cerebral cortex. The hypothalamus regulates various homeostatic functions, such as body temperature, hunger, and thirst.