HIATUS SEMILUNARIS Meaning and
Definition
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Hiatus semilunaris refers to a specific anatomical structure located within the nasal cavity. It is a narrow slit-like space that separates two important structures known as the ethmoid bulla and the uncinate process.
The nasal cavity is a complex structure lined with mucous membranes and divided into two distinct sides by the nasal septum. The superior portion of the cavity contains a series of hollow, air-filled spaces known as the paranasal sinuses, which are surrounded by various bony structures. The hiatus semilunaris can be found in the middle meatus, which is one of the three anatomical regions within the nasal cavity.
The hiatus semilunaris appears as a semi-circular depression or groove on the lateral wall of the middle meatus. It serves as a landmark for various structures and openings in this area. Notably, the anteriorly situated opening of the maxillary sinus, known as the maxillary ostium, is located just above the hiatus semilunaris. Additionally, the frontal sinus drains into the middle meatus through a small passage called the frontonasal duct, which also opens near this depression.
Understanding and identifying the hiatus semilunaris is crucial in studying the anatomy and physiology of the nasal cavity, as well as during certain clinical procedures such as endoscopic sinus surgery.
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Semilunar hiatus, a deep, narrow groove in the external wall of the middle meatus of the nasal fossa, into which the antrum of Highmore and the middle ethmoid cells open.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
Common Misspellings for HIATUS SEMILUNARIS
- giatus semilunaris
- biatus semilunaris
- niatus semilunaris
- jiatus semilunaris
- uiatus semilunaris
- yiatus semilunaris
- huatus semilunaris
- hjatus semilunaris
- hkatus semilunaris
- hoatus semilunaris
- h9atus semilunaris
- h8atus semilunaris
- hiztus semilunaris
- histus semilunaris
- hiwtus semilunaris
- hiqtus semilunaris
- hiarus semilunaris
- hiafus semilunaris
- hiagus semilunaris
- hiayus semilunaris
Etymology of HIATUS SEMILUNARIS
The word "hiatus semilunaris" has its etymology rooted in Latin.
The term "hiatus" derives from the Latin word "hiatus", meaning "a gap, opening, or passage".
The word "semilunaris" is formed by combining the Latin words "semi", meaning "half", and "lunaris", meaning "crescent-shaped".
When used together, "hiatus semilunaris" refers to a crescent-shaped gap or opening found in the lateral wall of the nasal cavity.
