29 DBMS_DDL. This package provides access to some SQL data definition language (DDL) statements from stored procedures. It also provides special administration operations that are not available as Data Definition Language statements (DDLs).
Anatomy of the mouth. The mouth, consists of 2 regions, the vestibule and the oral cavity proper. The vestibule is the area between the teeth, lips and cheeks. The oral cavity is bounded at the sides and in front by the alveolar process (containing the teeth) and at the back by the isthmus of the fauces.
The pharynx is the portion of your throat where the back part of your mouth meets the esophagus and the trachea (your windpipe). As with the mouth, it's not technically an organ, but it is important. When you're done chewing food, your tongue pushes the food backward into the pharynx. A flap of tissue called the epiglottis shuts off the windpipe when you swallow so that food doesn't go down the wrong tube.