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  2. Paranasal sinuses - Wikipedia

    en.wikipedia.org/wiki/Paranasal_sinuses

    The, paranasal sinuses are joined to the nasal cavity via small orifices called ostia. These become blocked easily by allergic inflammation, or by swelling in the nasal lining that occurs with a cold. If this happens, normal drainage of mucus within the sinuses is disrupted, and sinusitis may occur. Because the maxillary posterior teeth are ...

  3. Waters' view - Wikipedia

    en.wikipedia.org/wiki/Waters'_view

    Maxillary sinuses. Frontal sinuses, seen with an oblique view. Ethmoidal cells. Sphenoid sinus, seen through the open mouth. Odontoid process, where if it is just below the mentum, it confirms adequate extension of the head. The frontal sinus may not show the frontal sinus in detail. [1]

  4. Caldwell's view - Wikipedia

    en.wikipedia.org/wiki/Caldwell's_view

    The rays pass from behind the head and are angled at 15-20° to the radiographic plate. It is commonly used to get better view of the ethmoid and frontal sinuses. [1] It is named after the noted American radiologist Eugene W. Caldwell, who described it in 1907. [2] [3]

  5. File:Paranasal sinuses numbers.svg - Wikipedia

    en.wikipedia.org/wiki/File:Paranasal_sinuses...

    This image is a derivative work of the following images: File:Paranasal_sinuses.svg licensed with Cc-by-2.5 . 2009-08-07T11:45:10Z M.Komorniczak 419x233 (605130 Bytes) Poprawa zatoki szczękowej

  6. Sinus (anatomy) - Wikipedia

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

    A sinus is a sac or cavity in any organ or tissue, or an abnormal cavity or passage. In common usage, "sinus" usually refers to the paranasal sinuses, which are air cavities in the cranial bones, especially those near the nose and connecting to it. Most individuals have four paired cavities located in the cranial bone or skull.

  7. Maxillary sinus - Wikipedia

    en.wikipedia.org/wiki/Maxillary_sinus

    The pyramid-shaped maxillary sinus (or antrum of Highmore) is the largest of the paranasal sinuses, located in the maxilla. It drains into the middle meatus of the nose [1] [2] through the semilunar hiatus. It is located to the side of the nasal cavity, and below the orbit. [2]

  8. 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 ...

  9. Sphenoid sinus - Wikipedia

    en.wikipedia.org/wiki/Sphenoid_sinus

    The sphenoid sinus is a paired paranasal sinus in the body of the sphenoid bone. It is one pair of the four paired paranasal sinuses. [1] The two sphenoid sinuses are separated from each other by a septum. Each sphenoid sinus communicates with the nasal cavity via the opening of sphenoidal sinus.

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