So inside or around the oral cavity we have these specialized types of glands that we're going to focus on in a future lecture. And these glands release secrete, these specialized proteolytic enzymes that help break down our food inside the oral cavity. Now the carbohydrates are the macromolecules that are broken down inside the oral cavity and we'll discuss that in much more detail in a future lecture. So we ingest our food. Mechanical and chemical digestion begins in our mouth. Next, it travels to the pharynx.