. On the anatomy of vertebrates [electronic resource] . palatoglossus,from extrinsic points passinserted into the tongues sub-stance : a third class of fibresmainly constitute that substancein which they both begin and end,and are called the ,f intrinsicmuscles, and collectively e lin-sruales. In the transverse sec- o tion, fig. 145, the genioglossi, d, arewith the central intrinsic fibres, ctinguishable from the ( peripheral mass of these fibres, b, owingto their greater number and more compact arrangement at this 1 lxxxv. pi. 8, fig. 7. Transverse section of Human tongue, atthe fore part of
. On the anatomy of vertebrates [electronic resource] . palatoglossus,from extrinsic points passinserted into the tongues sub-stance : a third class of fibresmainly constitute that substancein which they both begin and end,and are called the ,f intrinsicmuscles, and collectively e lin-sruales. In the transverse sec- o tion, fig. 145, the genioglossi, d, arewith the central intrinsic fibres, ctinguishable from the ( peripheral mass of these fibres, b, owingto their greater number and more compact arrangement at this 1 lxxxv. pi. 8, fig. 7. Transverse section of Human tongue, atthe fore part of the frrenum ccxl. seen decussating verticallythese are nominally dis- 200 ANATOMY OF Plan of intrinsic muscles of tongue, ccxl, 147 part; in a section anterior to the genioglossi the peripherallayer is uninterrupted. The central mass consists of transverseand vertical fibres, the latter not wholly intrinsic but partlyderived from the genioglossi: the peripheral mass mainly con-sists of longitudinal fibres,of which those along theupper and under surfacesare intrinsic, those on thesides of the tongue in partderived from the styloglossi. As exemplified in theplan, fig. 146, the verticaland transverse fibres decus-sate in the centre, and thereexclude the longitudinal fibres: the vertical ones diverge andspread as they approach b, b, and cease near the margins a, a; the transverse also di-verge, as they approachb, b, and disappear nearthe upper and under sur-faces a, a. The verticalemerge from the trans-verse as they come nearthe upper and under sur-faces a, a, and the trans-verse extend freely fromthe vertical to attain thelateral margins c, c. Thelongitudinal fibres, whi
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