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Palatine bone Os palatinum

The palatine bone is a paired, irregular bone of the facial skeleton. It is found in the posterior aspect of the nasal cavity between the maxillae and pterygoid processes of the sphenoid bones. It helps form the inferior orbital fissures, the pterygopalatine and pterygoid fossa, the floor of the orbit and the hard palate and the floor and lateral walls of the nasal cavity. Each bone consists of two plates: the horizontal plate and perpendicular plate. It also has three processes: the pyramidal process, orbital process and sphenoidal process. The palatine bone contains two foramina that transmit vessels and nerves: the greater palatine foramen and the lesser palatine foramen.

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