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Tongue and groove joints allow two flat pieces to be joined strongly together to make a single flat surface. Before plywood became common, tongue and groove boards were also used for sheathing buildings and to construct concrete formwork. A strong joint, the tongue and groove joint is widely used for re-entrant angles
Triangular ridges are those that project from the cusp tips of premolar and molars to the central groove. Transverse ridges are formed by the union of two triangular ridges on posterior teeth. The joining of buccal and lingual triangular ridges is usually named as an example.
The nasiolabal groove of a dusky salamander. A paralogue of the SFTPC gene, which is expressed exclusively in the lungs in other vertebrates, is in lungless salamanders expressed in the larval integument instead. When going through metamorphosis, it disappears from the integument and appears in the buccopharynx in adults.
Matchboarding can be used both internally and externally, and can be layered in many different styles including: square edge, feather edge, ship lap and tongue and groove. [2] [3] Matchboard was most popular in the late Victorian period, when woodworking machinery had developed that could cut the edge joints quickly and cheaply.
Lingual papillae, particularly filiform papillae, are thought to increase the surface area of the tongue and to increase the area of contact and friction between the tongue and food. [2] This may increase the tongue's ability to manipulate a bolus of food, and also to position food between the teeth during mastication (chewing) and swallowing.
Groove on a cylinder. In manufacturing or mechanical engineering a groove is a long and narrow indentation built into a material, generally for the purpose of allowing another material or part to move within the groove and be guided by it. Examples include:
The human tongue is divided into two parts, an oral part at the front and a pharyngeal part at the back. The left and right sides are also separated along most of its length by a vertical section of fibrous tissue (the lingual septum) that results in a groove, the median sulcus, on the tongue's surface. There are two groups of glossal muscles.
Sulcalization (from Latin: sulcus 'groove'), also called internal rounding, in phonetics, is the pronunciation of a sound, typically a sibilant consonant, such as English /s/ and /z/, with a deep groove running along the back of the tongue that focuses the airstream on the teeth, producing a more intense sound. This is accomplished by raising ...