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Inferior nasal conchae
The inferior nasal concha (Inferior Turbinated Bone) is one of the turbinates in the nose. It extends horizontally along the lateral wall of the nasal cavity [Fig. 1] and consists of a lamina of spongy bone, curled upon itself like a scroll. Each inferior nasal concha is considered a facial pair of bones since they arise from the maxillae bones and projects horizontally into the nasal cavity. They are also termed 'inferior nasal turbinates' because they function similar to that of a turbine. As the air passes through the turbinates, the air is churned against these mucosa-lined bones in order to receive warmth, moisture and cleansing. Superior to inferior nasal concha are the middle nasal concha and superior nasal concha which arise from the cranial portion of the skull. Hence, these two are considered as a part of the cranial bones.
It has two surfaces, two borders, and two extremities.
Additional recommended knowledge
The medial surface is convex, perforated by numerous apertures, and traversed by longitudinal grooves for the lodgement of vessels.
The lateral surface is concave, and forms part of the inferior meatus.
Its upper border is thin, irregular, and connected to various bones along the lateral wall of the nasal cavity.
It may be divided into three portions: of these,
The inferior border is free, thick, and cellular in structure, more especially in the middle of the bone.
Both extremities are more or less pointed, the posterior being the more tapering.
The inferior nasal concha is ossified from a single center, which appears about the fifth month of fetal life in the lateral wall of the cartilaginous nasal capsule.
This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Inferior_nasal_conchae". A list of authors is available in Wikipedia.|