1 Click a column heading to select a column. 2  Type the Access tableâs column heading in the Field Name field. 3  Choose a Data type. 4  Indicate if the field should be indexed and, if so, select the type of index. 5  Check the Do Not Import Field box for any column you do not want to import. 6  Click Next.
Digestion happens in the mouth. Mastication (the action of chewing and mechanically breaking down food) triggers you're exocrine glands to excret a watery liquid called saliva.
Your digestive system breaks the food you eat down into small molecules that your intestines can absorb into the bloodstream. Two separate processes are at work. Mechanical digestion involves the physical breakdown of food into smaller chunks. This is what happens when you chew. Chemical digestion, which is the next phase, breaks food into smaller molecules. Digestive enzymes assist with chemical digestion.