The correct spelling of the anatomical term "spina nasalis anterior" can be explained with the International Phonetic Alphabet (IPA). "Spina" is pronounced as "spiːnə" with a long "i" sound, and "nasalis" as "neɪzəlɪs" with the stress on the second syllable. "Anterior" is pronounced as "æntɪrɪər" with the emphasis on the first syllable, and the letter "r" is not silent. This term refers to the anterior nasal spine located at the bottom of the nasal cavity.
Spina nasalis anterior, commonly referred to as the anterior nasal spine, is a bony projection located at the midline of the maxilla bone in the human skull. It is positioned in the front region of the nasal cavity, specifically between the two maxillary bones at the base of the nasal septum.
An integral part of the anatomy of the human skull, the spina nasalis anterior serves as an attachment point for various structures including muscles, ligaments, and connective tissues. It provides stability and structural support to the surrounding facial bones and helps to maintain the shape and integrity of the nasal region. Moreover, the spina nasalis anterior contributes to the overall structural stability of the midface and functions as a crucial landmark for professionals such as surgeons, orthodontists, and prosthodontists during various procedures, including orthognathic surgeries, rhinoplasties, and maxillary advancement procedures.
The spina nasalis anterior has a distinct triangular shape, with its apex pointing downward. It is formed by the fusion of the two maxillary bones during fetal development. Its size and prominence can vary among individuals, but it typically does not affect nasal function or cause any significant health issues. Additionally, it may play a role in determining the aesthetic appearance of the nose as it can influence the projection and contours of the nasal tip.
Anterior nasal spine; a pointed projection at the anterior extremity of the intermaxillary suture.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.