system
Given the following post, respond as if you're commenting on Reddit:
human
Why do we feel thirst in our throat but hunger in our stomach?

Why do we feel the snsation of thirst in our throats but hunger in our stomach it it because as the amount of water in our body becomes lower less saliva is created making the throat dry?
gpt
When you're dehydrated, your kidneys release a hormone called renin, which activates another hormone called angiotensin.  These do a number of things in your kidneys to help conserve water, but angiotensin also reduces saliva production, which gives you a dry mouth/throat.

When your stomach is empty, cells in the GI tract release a hormone called ghrelin.  Ghrelin acts on your brain to produce a feeling of hunger, and also stimulates acid production and muscle activity in the gut to prepare for incoming food.  This muscle activity is what you are feeling when your stomach rumbles.