What are paranasal cavities?

paranasal cavities are spaces in the bones of the skull and face, which are filled with air. These open spaces serve the purpose of warming and humidifying the air we breathe, as well as to give a resonance of voice. They also reduce the weight of the skull, which would be significantly heavier without these open spaces. Cells that line the cavities also produce mucus that captures inhalation pathogens and prevents the nose from drying out. People have several paranasal cavities found in different places around the eyes and nose.

We usually refer to paranasal cavities simply like our cavities for comfort. In fact, however, there are other types of cavities in the skull. Small cavities are present, for example, in the middle ear, and therefore the term "paranasal cavity" that distinguishes them from others. Because they only develop partially before birth, our paranasal cavities continue to develop throughout our lives. This applies to Nearly every organism with cavities of any kind.

paranasal cavities are set upNY in four pairs that are more or less symmetrical from left to right. The maxillary cavities are the largest of them and are located under the eyes in the inner part of the cheekbones. Another largest are the front cavities that are at the forefront of each eye. This is the last that develops chronologically; Some people do not develop at all.

Ethmoid cavities are much smaller than the other two pairs and are located behind both side of the nose bridge near the eyes. The last couple are sphenoid cavities that are found in the skull behind the inner nasal passage, above the neck. Each pair of cavities is associated with the nasal passage of small tubes called ostia. Normally these tubes allow mucus to be harmlessly drained from the cavities. When one catches colds, nasty and ostia is inflamed, they block the right drainage and lead to nasal overload and headache.

may also cause other more serious diseases of paranasal DUtin. In rare cases, cavity cancer may develop. This is rare in Western countries, but a little more common in some other areas of the world, including South Africa and Japan. Its accurate causes proved to be difficult to determine, but the use of snorting and long -term exposure to wood dust can be risk factors. The persistent sinus and blocking pain are the most common symptoms of this cancer, which, like other cancer, has the best prognosis if it is captured soon and effectively.