How do the parts of our brains function? on hot summer days, devon relies on what brain structure to monitor his thirst and the need to drink more water?

For this case, the brain relies on hypothalamus

The brain structure that Devon relies on in thirst and the need to drink more water is the hypothalamus. It is one of the function that is responsible in thirst regulation and the one that has the needs of having to replenish fluid in the body.