The oropharynx is the part of the throat just behind the mouth. It begins where the oral cavity stops. It includes the base of the tongue (the back third of the tongue), the soft palate (the back part of the roof of the mouth), the tonsils, and the side and back wall of the throat.ral cavity cancer, or just oral cancer, is cancer that starts in the mouth (also called the oral cavity). Oropharyngeal cancer starts in the oropharynx, which is the part of the throat just behind the mouth.
polymorphism - (biology) the existence of two or more forms of individuals within the same animal species (independent of sex differences) biological science, biology - the science that studies living organisms
Inheritance is the ability to use the data and methods of one kind of object by another as if they were defined in the other object to begin with. Polymorphism means that an object that inherits appears to be both kinds of object, the kind of object it is itself and the kind of object from which it inherits.nheritance is the ability to use the data and methods of one kind of object by another as if they were defined in the other object to begin with. Polymorphism means that an object that inherits appears to be both kinds of object, the kind of object it is itself and the kind of object from which it inherits.