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Paranasal sinuses and nose, 3D CT scan

Paranasal sinuses and nose, 3D CT scan

C037/4627

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Credit

K H FUNG / SCIENCE PHOTO LIBRARY K H FUNG / SCIENCE PHOTO LIBRARY

Caption

Paranasal sinuses and nose. Coloured 3D computed tomography (CT) scan of the human nose and surrounding regions, seen from above, showing the paranasal sinuses (centre) and the nasal cavity (upper centre). The paranasal sinuses are spaces in the bones surrounding the eyes and nose, and the cheek bones of the upper jaw. They lighten the bones of the skull and reduce the weight of the head. They are connected to the nasal passages and are lined with mucous membranes. They can fill with fluid and secrete mucus during an infection. The paired triangular structures are the maxillary sinuses. The sphenoid sinus is at lower centre. The small spaces at centre are the ethmoidal sinuses. The final paranasal sinuses are the frontal sinuses above the eyes (not clearly seen here).

Release details

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