SPINA NASALIS POSTERIOR Meaning and
Definition
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Spina nasalis posterior refers to a bony anatomical structure found in the human skull, specifically located within the nasal cavity. The term "spina" originates from Latin and translates to "spine," while "nasalis" relates to the nose. "Posterior" denotes the position of this feature, indicating it is located towards the back or rear region of the nasal cavity.
The spina nasalis posterior is a small, ridge-like projection situated on the upper surface or roof of the posterior nasal cavity, along the midline. It is formed by a thin strip of bone, often likened to a small spine or crest. This bony ridge extends vertically from the rear edge of the nasal aperture, or the opening of the nose, towards the back of the skull.
The function of the spina nasalis posterior is not fully understood, but it is believed to serve as an attachment point for various tissues within the nasal cavity. It may provide support and stabilization to surrounding structures, such as the nasal septum or the thin wall separating the left and right sides of the nose. Additionally, the spina nasalis posterior may help to direct airflow during respiration, potentially impacting the process of smell and the overall nasal airflow dynamics.
Overall, the spina nasalis posterior is a small bony feature located in the nasal cavity, serving as an attachment point for nasal tissues and potentially influencing nasal function and airflow dynamics.
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Posterior nasal spine, posterior palatine spine; the sharp posterior extremity of the nasal crest.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
Common Misspellings for SPINA NASALIS POSTERIOR
