What a healthy human tongue looks like
What a healthy human tongue looks like
Language is a muscular organ that participates inmixing food in the mouth, as well as in acts of articulation and swallowing. In addition, language is the organ of taste. This organ is located on the lower wall of the oral cavity and with closed teeth almost completely fills the latter, while the tongue is in contact with the gums, teeth and sky.
Instructions
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The tongue is an oval body, slightlyElongated shape. The anterior part narrows, forming the tip or tip of the tongue. The posterior, wider and thicker part of this organ is called the root. Between the tip and the root is the body of the tongue. The surface of the organ that faces upward and slightly to the pharynx and the sky is the back of the tongue.
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The lower surface of this muscular organIt is present only in the anterior part of the tongue, namely in the area of the apex and in the body. On the right and left, the language has its edges. To the touch this organ of taste is soft and very plastic, its shape is constantly changing.
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As a result of the fusion of the two parts of the language intoThe period of embryonic development on its back is a midline furrow. Behind this furrow ends with a hole called a blind hole. The latter is located on the site between the root and the body of the tongue and is the region of formation of the outgrowth from which the thyroid gland develops.
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Forward and sideways from the blind hole to the edgesthe small borderline furrow, which is a kind of boundary between the root and the body of the organ, is moving away from the tongue. The main mass of the tongue is formed by muscles, which are covered with mucous from above.
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The mucous membrane of the organ is pale pink in color,And on the back, top and edges of the mucosa has a velvety appearance, which is due to the presence on it of a number of elevations - papillae. They can be of various sizes and shapes, contain conductors of taste or tactile sensitivity, as well as nerves and blood vessels. Each papilla of the tongue is the formation of a connective tissue, which, like the entire mucosa, is covered with a nonkeratinizing epithelium. There are such kinds of lingual papillae: filiform, conical, mushroom-shaped, trough-shaped, leaf-shaped.
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On the mucosa of the root of the tongue there are no papillae, but there aremany tubercles containing lymphoid follicles. In the complex the follicles of the mucosa of the root of the tongue were called lingual tonsils. Mucous of the lower surface of the organ is thin, smooth and forms two folds in shape resembling fringe and converging at the tip of the tongue. The middle line is the fold - this is the so-called frenum of the tongue. On each side of the bridle is a double elevation, which is called the hyoid papilla. At the latter, the ducts of the salivary glands open.
