And we'll discuss starch in much more detail in the next lecture. So when we ingest starch, we break down starch into these maltose disaccharides. And when maltose makes its way into the brush border of our small intestine, we have these special digestive enzymes we call maltase molecules. And maltase is the enzyme that is responsible for digesting and breaking down these alpha one four glycocitic bonds within maltose. So when maltose arrives, when maltose arrives at the brush border of the small intestine, an enzyme called maltase hydrolyzes, maltose disaccharides into their individual glucose constituents, and then those glucose molecules can be ingested into the cell. Now, let's move on to the second common type of disaccharide we call lactose.