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  2. Frontal sinus - Wikipedia

    en.wikipedia.org/wiki/Frontal_sinus

    The frontal sinuses are one of the four pairs of paranasal sinuses that are situated behind the brow ridges. Sinuses are mucosa -lined airspaces within the bones of the face and skull. Each opens into the anterior part of the corresponding middle nasal meatus of the nose through the frontonasal duct which traverses the anterior part of the ...

  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. Paranasal sinuses - Wikipedia

    en.wikipedia.org/wiki/Paranasal_sinuses

    The maxillary sinuses, the largest of the paranasal sinuses, are under the eyes, in the maxillary bones (open in the back of the semilunar hiatus of the nose). They are innervated by the maxillary nerve (CN V2). [2] The frontal sinuses, superior to the eyes, in the frontal bone, which forms the hard part of the forehead.

  5. Human nose - Wikipedia

    en.wikipedia.org/wiki/Human_nose

    The frontal sinuses are located in the frontal bone; the sphenoidal sinuses in the sphenoid bone; the maxillary sinuses in the maxilla; and the ethmoidal sinuses in the ethmoid bone. [2] [13] A narrow opening called a sinus ostium from each of the paranasal sinuses allows drainage into the nasal cavity. The maxillary sinus is the largest of the ...

  6. Frontonasal duct - Wikipedia

    en.wikipedia.org/wiki/Frontonasal_duct

    The frontonasal duct is a duct through which either frontal sinus drains into the nasal cavity. [2] [3] Each frontal sinus opens into the frontonasal duct by an opening (the opening of frontal sinus or frontal sinus aperture [4]) on the inferomedial part [3] of the floor of the sinus. [4]

  7. Sinusitis - Wikipedia

    en.wikipedia.org/wiki/Sinusitis

    Sinusitis, also known as rhinosinusitis, is an inflammation of the mucous membranes that line the sinuses resulting in symptoms that may include production of thick nasal mucus, nasal congestion, facial congestion, facial pain, facial pressure, loss of smell, or fever.

  8. Prisoners of Profit - The Huffington Post

    projects.huffingtonpost.com/prisoners-of-profit-2

    Riots often go unreported, meaning law enforcement officers never arrive to investigate or document evidence of problems, these sources say. Staff training sessions tend to be conducted in a perfunctory fashion, with little effect – but they are nearly always well-documented and up to date.

  9. Skull - Wikipedia

    en.wikipedia.org/wiki/Skull

    The skull also contains sinuses, air-filled cavities known as paranasal sinuses, and numerous foramina. The sinuses are lined with respiratory epithelium. Their known functions are the lessening of the weight of the skull, the aiding of resonance to the voice and the warming and moistening of the air drawn into the nasal cavity.