Acute and chronic sinusitis are two common para-nasal sinus diseases.
Nasal cavity.
Sinusitis is inflammation or infection of the lining of the paranasal sinuses. There are no sinuses in the nasal cavity itself, rather they surround the nose and are joined to the nasal cavity via small orifices called ostia.
lateral irontal sinus/ medial irontal sinus/ rostral frontal sinus
The external nose is examined. The nasal mucosa and internal structures can be observed with the use of a penlight and a nasal speculum.
Dry nasal passages may crack, allowing bacteria to enter. When allergies are diagnosed, a number of nasal sprays are available to try to prevent inflammation within the nasal passageways, thus allowing the normal flow of mucus.
Nasal cavity.
They have two main functions: 1) As in all sinuses, they give size without added weight and 2) They give depth to the voice. You have the para nasal sinuses, assembled around your nose. You have maxillary sinuses, frontal sinuses, ethmoid sinuses and sphenoid sinuses around your nose. These sinuses make the area around your nose, very light in weight. The diagonally opposite part of the skull is thick and heavy. That is occipital bone for example! This has an evolutionary advantage to human being. After deep inspiration, you can float in the water, without any efforts. So these para nasal sinuses has helped you to keep your nose out of water. The opposite thick part of the skull help you in this endeavour. You can very easily understand the importance of your nose in water verses your nose out of water. That is the reason, why the para nasal sinuses are assembled around your nose. All the other advantages are accessory, probably.
No one knows exactly what purpose the cranial venous sinuses serve in the skull. The para-nasal sinuses help to add humidity and warmth to the air that is breathed. They also lighten the weight of the skull.
Sinusitis (sye-nuss-EYE-tiss) means inflammation of the sinuses or, more specifically, the lining of the sinuses. Inflammation of the sinuses means infection in the sinuses which causes frontal headaches and nasal discharge. There are two sinuses called maxillary sinus which are in the cheek bones and frontal sinus and para-nasal sinuses around the base of the nose. You may require antibiotics, nasal decongestants, antral washouts and sometimes surgery to treat difficult cases.
Sinus lavage is the medical term meaning washing of nasal sinuses. Sinus lavage may be performed for therapeutic or diagnostic reasons.
nasal cavity
SINUSES
The medical term for washing the nasal sinuses is "nasal irrigation" or "nasal douche." It involves flushing out the sinuses with a saline solution to help alleviate congestion and improve breathing.
Sinusitis is inflammation or infection of the lining of the paranasal sinuses. There are no sinuses in the nasal cavity itself, rather they surround the nose and are joined to the nasal cavity via small orifices called ostia.
Displacement Therapy
Greenish nasal mucous usually signals a bacterial infection (often of the sinuses).
"olfactory" They are chemical receptors, in your nasal sinuses.