Essentials of anatomy, including the anatomy of the viscera : arranged in the form of questions & answers prepared especially for students of medicine / Charles Nancrede.

  • Charles B. Nancrede
Date:
1899
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Licence: Public Domain Mark

Credit: Essentials of anatomy, including the anatomy of the viscera : arranged in the form of questions & answers prepared especially for students of medicine / Charles Nancrede. Source: Wellcome Collection.

Provider: This material has been provided by the Augustus C. Long Health Sciences Library at Columbia University and Columbia University Libraries/Information Services, through the Medical Heritage Library. The original may be consulted at the the Augustus C. Long Health Sciences Library at Columbia University and Columbia University.

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    tS^ihenoitlal /iroeesi. ylrtieuUrfrort. Of what parts does each bone consist? Of a vertical platCi a liorizontal plate^ and three processes, the pterygoid., .s2)henoidaJ^ and orhital (Figs. !^3 and 24). Describe the points on the vertical plate. This thin oblong plate, directed upward and a little inward, presents internally at its upper part the superior turbinated crest; lower, a second ridge, the inferior turhiuated crest., for the middle and inferior turbinated bones, between which lies the groove for the middle nasal meatus; below the inferior crest is another groove., for the inferior meatus. The posterior harder articulates with the pterygoid process of the sphe- noid ; on the external surface is a deep groove forming the pos- terior palatine canal by articu- lation with the superior max- illa, transmitting the vessels and nerve of the same name ; the upper and back part of this sur- face helps to form the inner wall of the spheno-maxillary fossa. The anterior border sends forward a small lamina of bone opposite the inferior turbi- nated crest, the tnaxillary process, which narrows the orifice of the antrum. The posterior border at the lower portion is pyramidal, forming the pterygoid jrrocess, which is deeply grooved, forming part of the pterygoid fossa, with a V-shaped rough margin for articulation with the pterygoid plates. The superior border., deeply notched by the sphenopalatine foramen (or notch), presents two processes. The orbital jyrocess in front articulates anteriirrly with the maxilla, posteriorly with the sphenoid (its cells here usually opening into the sphenoidal sinus), internally with the ethmoid, and has a free orbital and zygomatic surface, the latter looking into the zygomatic fossa, with a rounded border forming part of tlie spheno-maxillary fissure ; behind, projecting upward and inward, is the sphenoidal jrroeess, grooved on its upper surface ])y a pterygo-palatine 'k'. Fig. 24.—Left palate bone, posterior view (Gray).