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  2. Maxillary sinus - Wikipedia

    en.wikipedia.org/wiki/Maxillary_sinus

    The nasal wall of the maxillary sinus, or base, presents, in the disarticulated bone, a large, irregular aperture that communicates with the nasal cavity. [citation needed] In the articulated skull this aperture is much reduced in size by the following bones: the uncinate process of the ethmoid above,

  3. Sinus (anatomy) - Wikipedia

    en.wikipedia.org/wiki/Sinus_(anatomy)

    Ethmoid sinus cavities which are located between the eyes. Frontal sinus cavities which can be found above the eyes (more in the forehead region). Maxillary sinus cavities are located on either side of the nostrils (cheekbone areas). Sphenoid sinuses that are located behind the eyes and lie in the deeper recesses of the skull.

  4. Respiratory tract - Wikipedia

    en.wikipedia.org/wiki/Respiratory_tract

    Complete respiratory system. The respiratory tract is divided into the upper airways and lower airways.The upper airways or upper respiratory tract includes the nose and nasal passages, paranasal sinuses, the pharynx, and the portion of the larynx above the vocal folds (cords).

  5. Underwood's septa - Wikipedia

    en.wikipedia.org/wiki/Underwood's_septa

    Recent studies have classified two types of maxillary sinus septa: primary and secondary. Primary septa are those initially described by Underwood and that form as a result of the floor of the sinus sinking along with the roots of erupting teeth; these primary septa are thus generally found in the sinus corresponding to the space between teeth, as explained by Underwood.

  6. Semilunar hiatus - Wikipedia

    en.wikipedia.org/wiki/Semilunar_hiatus

    The semilunar hiatus (eg, hiatus semilunaris) is a crescent-shaped [citation needed] /semicircular/ [1] curved [2] slit [2] /groove [1] upon the lateral wall of the nasal cavity [3] at the middle nasal meatus just inferior to the ethmoidal bulla. [2] It is the location of the openings for the frontal sinus, maxillary sinus, and anterior ...

  7. Maxillary prominence - Wikipedia

    en.wikipedia.org/wiki/Maxillary_prominence

    The maxillary prominence forms the lateral wall and floor of the orbit, and in it are ossified the zygomatic bone and the greater part of the maxilla; it meets with the medial nasal prominence, from which, however, it is separated for a time by a groove, the naso-optic furrow, that extends from the furrow encircling the eyeball to the nasal pit.

  8. Submucosa - Wikipedia

    en.wikipedia.org/wiki/Submucosa

    The submucosa (or tela submucosa) is a thin layer of tissue in various organs of the gastrointestinal, respiratory, and genitourinary tracts. It is the layer of dense irregular connective tissue that supports the mucosa (mucous membrane) and joins it to the muscular layer, the bulk of overlying smooth muscle (fibers running circularly within layer of longitudinal muscle).

  9. Sinus - Wikipedia

    en.wikipedia.org/wiki/Sinus

    Sinus (anatomy), a sac or cavity in any organ or tissue Paranasal sinuses, air cavities in the cranial bones, especially those near the nose, including: Maxillary sinus, is the largest of the paranasal sinuses, under the eyes, in the maxillary bones; Frontal sinus, superior to the eyes, in the frontal bone, which forms the hard part of the forehead

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