Horizontal plate of palatine bone
- Horizontal plate of palatine bone
Infobox Bone
Name = Horizontal plate of palatine bone
Latin = pars horizontalis
GraySubject = 41
GrayPage = 167
Caption = Left palatine bone. Nasal aspect. Enlarged.
Caption2 = Left palatine bone. Posterior aspect. Enlarged.
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The horizontal part of the palatine bone (horizontal plate) is quadrilateral, and has two surfaces and four borders.
Surfaces
The superior surface, concave from side to side, forms the back part of the floor of the nasal cavity.
The inferior surface, slightly and rough, forms, with the corresponding surface of the opposite bone, the posterior fourth of the hard palate. Near its posterior margin may be seen a more or less marked transverse ridge for the attachment of part of the aponeurosis of the Tensor veli palatini.
Borders
The anterior border is serrated, and articulates with the palatine process of the maxilla.
The posterior border is concave, free, and serves for the attachment of the soft palate. Its medial end is sharp and pointed, and, when united with that of the opposite bone, forms a projecting process, the posterior nasal spine for the attachment of the Musculus uvulæ.
The lateral border is united with the lower margin of the perpendicular part, and is grooved by the lower end of the pterygopalatine canal.
The medial border, the thickest, is serrated for articulation with its fellow of the opposite side; its superior edge is raised into a ridge, which, united with the ridge of the opposite bone, forms the nasal crest for articulation with the posterior part of the lower edge of the vomer.
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External links
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2010.
Look at other dictionaries:
horizontal plate of palatine bone — lamina horizontalis ossis palatini … Medical dictionary
palatine surface of horizontal plate of palatine bone — facies palatina laminae horizontalis ossis palatini … Medical dictionary
Perpendicular plate of palatine bone — Infobox Bone Name = Perpendicular plate of palatine bone Latin = lamina perpendicularis ossis palatini, pars perpendicularis GraySubject = 41 GrayPage = 168 Caption = Left palatine bone. Nasal aspect. Enlarged. (Vertical plate labeled at center… … Wikipedia
Palatine bone — Bone: Palatine bone Permanent teeth of upper dental arch, seen from below. (Horizontal part of palatine bone visible at bottom.) … Wikipedia
nasal surface of horizontal plate of palatine bone — facies nasalis laminae horizontalis ossis palatini … Medical dictionary
palatine bone — n a bone of extremely irregular form on each side of the skull that is situated in the posterior part of the nasal cavity between the maxilla and the pterygoid process of the sphenoid bone and that consists of a horizontal plate which joins the… … Medical dictionary
horizontal plate — n a plate of the palatine bone that is situated horizontally, joins the bone of the opposite side, and forms the back part of the hard palate compare PERPENDICULAR PLATE (2) … Medical dictionary
palatine bone — noun either of two irregularly shaped bones that form the back of the hard palate and helps to form the nasal cavity and the floor of the orbits • Syn: ↑palatine, ↑os palatinum • Derivationally related forms: ↑palatine (for: ↑palatine) • … Useful english dictionary
Orbital process of palatine bone — Bone: Orbital process of palatine bone Left palatine bone. Nasal aspect. Enlarged … Wikipedia
Pyramidal process of palatine bone — Infobox Bone Name = Pyramidal process of palatine bone Latin = processus pyramidalis ossis palatini GraySubject = 41 GrayPage = 168 Caption = Medial wall of left orbit. (Pyramidal process of palatine labeled at bottom right.) Caption2 = Left… … Wikipedia
