| A | B |
|---|
| Mouth | The cavity in which mastication takes place; the beginning of the alimentary canal. |
| Prognathism | Projection of the jaw, or jaws. |
| Maxillary | Type of prognathism in which the superior jaw (maxilla) protrudes. |
| Mandibular | Type of prognathism in which the inferior jaw (mandible) protrudes. |
| Dental | Type of prognathism in which the front teeth protrude; oblique insertion of the teeth also known as buck teeth. |
| Alveolar | Type of prognathism in which the sockets of the teeth are inclined. |
| Superior integumentary lip | The area between the base of the nose and the superior margin of the superior mucous membrane. |
| Inferior integumentary lip | That area between the inferior margin of the inferior mucous membrane and the mental eminence. |
| Mucous membrane | The visible red surfaces of the lip; the lining membrane of the body cavities that open to the exterior. |
| Superior mucous membrane of upper lip | The upper margin has a shape of the classic hunting bow; the medial lobe is found in the center of the membrane; narrows laterally as it disappears before reaching the end of the line of closure. |
| Inferior mucous membrane of lower lip | Is thicker than the superior mucous membrane; lies posteriorto theupper membrane. |
| Weather line | The line of color change at the junction of the wet and dry portions of the mucous membranes; the area where adhesive is applied to keep the lip closed. |
| Medial lobe | The tiny prominence on the midline of the superior mucous membrane. |
| Line of closure | The line of forms between the two mucous membranes when the mouth is closed and the lips come in contact with each other; has the shape of the classic hunting bow. |
| Philtrum | The vertical groovelocatedon the superior integumentary lip; the width, form, and depth are different from person to person. |
| Angulus oris sulcus | The groove at the end of the line of closure. |
| Vertical lines of the mucous membrane | Fine vertical lines located on the mucous membrane. |
| Labial sulci | The vertical furrows on the lip extending from within the mucous membranes into the integumentary lips. |
