Outlines of human osteology / by F.O. Ward.

  • Frederick Oldfield Ward
Date:
1876
Catalogue details

Licence: Public Domain Mark

Credit: Outlines of human osteology / by F.O. Ward. Source: Wellcome Collection.

    80/392 page 62
    Inferior or Oral division. Small, uneven, concave, marked with little furrows and aj^ertures for nutrient vessels. 81. The ciRCUMFKBENCE, or hne of separation between these aspects, presents below, the alveolar procfss, a curved eminence, thicker behind than before, hollowed by eight deep conical cavities (called alveoli) for the insertion of the teeth, and marked internally and externally by a series of alternate eminences and depressions, which corresijond to the alveoli, and to the intervals between them. The alveoli vary in size and form according i to the teeth they respectively contain. Those of the incisors are deep, narrow, and single; those of the grinders are wide, and subdivided into minor cavities cor re S13 ending to the fangs of the teeth ; those of the superior canine, or eye.-teeili, are the deepest and most prominent externally, where they form on each side, a vertical ridge called the canine eminence, that separates the infra-orbitar from the myrtiform fossa. Anteriorly the circumference presents, first, a deeply concave edge, which is called the nasal notch of the upper maxillary, and contributes to form the anterior aperture of the nasal fossae ; below this, an eminence which forms half of the anterior nasal sf ine; and below this again, a short vertical border, which unites with that of the opposite bone. Posteriorly, the circumference is indicated by the maxillary tuberosity. Above, it is formed by the inner border of the orbitar plate, and in front of that by the Ascending or Nasal pkocess. This is a stout triangular eminence, directed upward, inward, and backward; smooth, concave, and marked with vascular apertures, on its external surface, where it gives attachment to muscles ;* less even within, where it presents, at its u^Dper part, some rugosities (occasionally a little half-cell), covered by a plate of the ethmoid; below these a hori- zontal crest, which articulates with the middle turbinated bone, and is cajlled the middlo turbinated crest of the upper maxillary; and below this again a horizontal shallow groove, marked with arterial furrows, and be- longing to the middle meatus of the nose. This groove is bounded below by the inferior turbinated crest of the upper maxUlary (a horizontal ridge which marks the line * Levator labii superioris; and levator labii superioris aUxquo nasi.
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