A semicircular,minimally flexible,curved piece of hard plastic that is inserted into the mouth so that it extends from just outside the lips to the pharynx is known as an ____________.

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The Answer of A semicircular,minimally flexible,curved piece of hard plastic that is inserted into the mouth so that it extends from just outside the lips to the pharynx is known as an ____________.

A Semicircular,minimally Flexible,curved Piece of Hard Plastic That Is Inserted