Book One -- The things that sustain and support the entire body, and what braces and attaches them all. [the bones and the ligaments that interconnect them] | Chapter 9 On the Twelve Bones of the Upper Maxilla, Including the Bones of the Nose

The sixth bone of the maxilla [os palatinum]

The sixth bone of the upper maxilla (P in fig. 2) [lamina horizontalis ossis palatini] and its mate constitute no small portion of the palate and nasal cavity. It is situated at the end of the palate where the nostrils reach into the throat; 43 it is a thin bone, but solid and broad. At its posterior end (from x to e in fig. 2) it is in part connected to the cuneiform bone [processus pterygoideus] and in part free, shaped like a parenthesis: “(” . Where it is joined to the cuneiform bone, it is circumscribed by that suture [sutura sphenopalatina] (e in figs. 1 and 2) which runs along the posterior side of the innermost tooth [dens molaris III] and separates the upper maxilla from the cuneiform bone, particularly where the cuneiform puts out its processes resembling a bat’s wings [ala major ossis sphenoidalis] (P in figs. 1 and 2). In its anterior and its outer side, this sixth bone ends at a suture [sutura palatina transversa] (from t to u in fig. 2) common to itself and the fourth bone [maxilla] of the maxilla, running transversely in the palate. On its inner side (from t to x in fig. 2), where it joins


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its mate, it is separated by a certain suture [sutura palatina mediana] which is common only to the sixth bone of either side, and there is a portion of it (t, y, and z in figure 2) [sutura intermaxillaris] which runs the length of the palate and separates the fourth maxillary bones from each other. The sixth maxillary bone therefore touches the cuneiform [os sphenoidale], the fourth maxillary [maxilla], its own mate, and finally the nasal septum [vomer]. It is separated from the sixth bone, as it is from the fourth, by the suture [sutura vomeromaxillaris] (g in fig. 1) previously mentioned as running to the lower part of the septum.



Book One -- The things that sustain and support the entire body, and what braces and attaches them all. [the bones and the ligaments that interconnect them] | Chapter 9 On the Twelve Bones of the Upper Maxilla, Including the Bones of the Nose