. Cunningham's Text-book of anatomy. Anatomy. THE TONGUE. 1129 run towards the tip; the arteries, however, are deeply placed in the substance of the tongue, at a distance of 3 to 6 mm. from the inferior surface. The plicae, which are more distinct at birth aud in the foetus, are said to correspond to the under tongue found in the lemurs. The root of the tongue is the portion of the inferior aspect which is con- nected by muscles and mucous membrane to the mandible and hyoid bone. It is of very considerable extent, and is, with the base, the most fixed part of the organ. It is also the situatio
. Cunningham's Text-book of anatomy. Anatomy. THE TONGUE. 1129 run towards the tip; the arteries, however, are deeply placed in the substance of the tongue, at a distance of 3 to 6 mm. from the inferior surface. The plicae, which are more distinct at birth aud in the foetus, are said to correspond to the under tongue found in the lemurs. The root of the tongue is the portion of the inferior aspect which is con- nected by muscles and mucous membrane to the mandible and hyoid bone. It is of very considerable extent, and is, with the base, the most fixed part of the organ. It is also the situation at which the vessels, nerves, and the extrinsic muscles enter. Structure of the Tongue.—The tongue is chiefly composed of striped muscular tissue, with a considerable admixture of fine fat. A median septum of connective tissue occupies the central part of the organ. In addition, there are vessels, nerves, glands, and lymph tissue, the whole being covered over by mucous membrane, except at the root (Fig. 893). The muscular tissue is derived partly from the terminations of the extrinsic muscles— namely, the hyoglossus, styloglossus, genioglossus, glossopalatinus, and chondroglossus; and also largely from the intrinsic muscles — namely, the longitudinalis superior, longitudinales inferiores, the transversus linguse, and the verticalis linguae. These are so arranged that they form a cortical portion, made up chiefly of longitudinal fibres— derived above from the longitudinalis superior and the hyoglossus, at the sides from Transversus M. verticalis M- i°°?^inalis M" ™*?™lis linguae lingute lingua. Nodules of Epithelium lymph tissue Septum Transversus linguae Longitudinalis inferior. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Cunningham, D. J. (Daniel John), 1850-1909; Robinson, Arthur,
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectanatomy, bookyear1914
