And let's begin with a salivary alpha amylase. So salivary simply means it exists in a saliva. So when we eat food and where we're chewing the food, that saliva actually contains a specific type of digestive enzyme and proteins known as alpha amylase. And what the alpha amylase does is it begins to cleave alpha one four glycocity linkages that exist in the starch as well as glycogen. So this begins the cleavage of alpha one four glycocity linkages in the mouth, and this breaks it down to smaller polysaccharides and oligosaccharides. Now, from the mouth, it moves via the esophagus, eventually makes its way into our stomach.