The body's reaction to sugar

What happens when sugar hits your tongue?And does eating a little bit of sugar make you crave more?You take a bite of cereal.The sugars it contains activate the sweet-taste receptors,part of the taste buds on the tongue.These receptors send a signal up to the brain stem,and from there, it forks off into many areas of the forebrain,one of which is the cerebral cortex.Different sections of the cerebral cortex process different tastes:bitter, salty, umami,and, in our case, sweet.