The posterior nasal spine is part of the horizontal plate of the palatine bone of the skull. It is found at the medial end of its posterior border. It is paired with the corresponding palatine bone to form a solid spine. It is the attachment of the uvula muscle. Structure The posterior nasal spine is found at the medial end of the posterior border of the horizontal plate of the palatine bone of the skull. Function The posterior nasal spine is the attachment of the uvula muscle. Clinical applications The posterior nasal spine is an important cephalometric landmark. Additional images See also anterior nasal spine References External links Bones of the head and neck