Palatine bone
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The palatine bones are paired L-shaped bones joined at the midline. They form the hard palate with the maxillary bones. They also form part of the floor of the nasal cavity (the hard palate separates the oral cavity from the nasal cavity).
Gross anatomy
TheyThe palatine bones are located at the back of the nasal cavity, between the maxillamaxillae and the sphenoid bones. Each bone consists of a horizontal and perpendicular plate forming an L-shape. There are three processes, the pyramidal, orbital and sphenoidal.
They contributemake structural contributions to the formation of the hard palate, the nasal cavity, the orbital floor and the pterygopalatine fossa.
Articulations
- with the palatine process of the maxilla anteriorly forming the transverse palatine suture
- with its opposite counterpart in the midline
- with the vomer
- with the inferior concha
- with both the body and the medial pterygoid plate of the sphenoid
- with the ethmoid
Attachments
- tensor palati to the posterior border of the horizontal plate
- muscle of the uvula to the nasal spine of the horizontal plate
- superficial head of the medial pterygoid muscle to the pyramidal process
Foramina
-
greater palatine foramen
- transmits the greater palatine vessels and nerve from the pterygopalatine fossa to the oral cavity
- formed by the greater palatine groove and converted to a canal by articulation with the maxilla
-
lesser palatine foramen
- transmits the lesser palatine nerves and vessels
-
sphenopalatine foramen
- formed by the sphenopalatine notch of the palatine bone
and articulararticulating with the body of the sphenoidbone - connects the pterygopalatine fossa to the nasal cavity and transmits the sphenopalatine artery and vein, nasopalatine nerve and posterior superior nasal nerves
- formed by the sphenopalatine notch of the palatine bone
Ossification
- intramembranous ossification, appears eighth week in utero
- at birth the horizontal and perpendicular plates are of equal size
-<p>The <strong>palatine bones </strong>are paired L-shaped bones joined at the midline. They form the <a href="/articles/hard-palate">hard palate</a> with the <a href="/articles/maxilla">maxillary bones</a>. They also form part of the <a href="/articles/nasal-cavity">nasal cavity</a>.</p><h4>Gross anatomy</h4><p>They are located at the back of the nasal cavity, between the maxilla and <a href="/articles/sphenoid-bone">sphenoid bones.</a> Each bone consists of a horizontal and perpendicular plate forming an L-shape. There are three processes, the pyramidal, orbital and sphenoidal.</p><p>They contribute to the formation of the hard palate, the nasal cavity, the orbital floor and the <a href="/articles/pterygopalatine-fossa">pterygopalatine fossa</a>.</p><h5>Articulations</h5><ul>- +<p>The <strong>palatine bones </strong>are paired L-shaped bones joined at the midline. They form the <a href="/articles/hard-palate">hard palate</a> with the <a href="/articles/maxilla">maxillary bones</a>. They also form part of the floor of the <a href="/articles/nasal-cavity">nasal cavity</a> (the hard palate separates the oral cavity from the nasal cavity). </p><h4>Gross anatomy</h4><p>The palatine bones are located at the back of the nasal cavity, between the maxillae and the <a href="/articles/sphenoid-bone">sphenoid.</a> Each bone consists of a horizontal and perpendicular plate forming an L-shape. There are three processes, the pyramidal, orbital and sphenoidal.</p><p>They make structural contributions to the hard palate, nasal cavity, orbital floor and <a href="/articles/pterygopalatine-fossa">pterygopalatine fossa</a>.</p><h5>Articulations</h5><ul>
-<a title="Sphenopalatine foramen" href="/articles/sphenopalatine-foramen">s</a><a href="/articles/sphenopalatine-foramen">phenopalatine foramen</a><ul>-<li>formed by the sphenopalatine notch of the palatine bone and articular with the body of the sphenoid bone</li>- +<a href="/articles/sphenopalatine-foramen">s</a><a href="/articles/sphenopalatine-foramen">phenopalatine foramen</a><ul>
- +<li>formed by the sphenopalatine notch of the palatine bone articulating with the body of the sphenoid</li>
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