ALAIN POL, ISM / SCIENCE PHOTO LIBRARY ALAIN POL, ISM / SCIENCE PHOTO LIBRARY
Nose and throat passages. Coloured xeroradiogram of a human head and neck, showing the upper respiratory tract (blue). The soft palate (pink) is seen as the flap below the nose. Above it is the large nasal cavity. The upper part of the throat is the pharynx, and the lower part is the larynx (bottom). This image also shows blood vessels, the vertebrae of the neck and the cranium of the skull. A xeroradiogram is a type of X-ray made using paper inside of radiographic film.
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