Horizontal Plate of Palatine Bone The horizontal plate makes up the roof of the mouth, and the rear portion of the oral cavity, just behind the nasal cavity; its front end is serrated and its back end is smoother. This part also includes the greater … Palatine bone function is threefold. The palatine bone is a solid bone structure that is closely related to the maxilla and plays a role in shaping the oral cavity. It is the roof of the oral cavity and the floor of the nasal cavity. Firstly, each bone provides partial surfaces of the hard palate of the roof of the mouth, the nasal cavity, and the orbit bones. The palatine bone has a horizontal and vertical plate as well as a pyramidal process (or pyramid-shaped portion). Palatine Bone Functions. Two major anatomical landmarks are described in this article, the palatal lamina, a perpendicular lamina and a horizontal lamina. The two palatine bones sit next to each other, giving rise to the posterior nasal spine towards the back of this plate.

The Bones of the palatine also give proper shape to the orbits, nasal cavity and oral cavity. They also make up an important part of the eye sockets and nasal cavity. One of the main functions of the Palatine pair is to form a portion of the hard palate or the upper surface (roof) of the mouth. The hard palate is formed by the palatine process of the maxilla and the horizontal plates of the palatine bones. The sphenopalatine foramen is the opening between the sphenoid bone and orbital processes of the palatine bone; it opens into the nasal cavity and gives passage to branches from the pterygopalatine ganglion and the sphenopalatine artery from the maxillary artery.

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