By and UPDATED December 16, 2015. The Federal Reserve decided to raise short-term interest rates for the first time since the financial crisis. Officials said the economy was strong enough to keep growing with a little less help from the central bank.
Clinical Relevance: Sinusitis. As the paranasal sinuses are continuous with the nasal cavity, an upper respiratory tract infection can spread to the sinuses. Infection of the sinuses causes inflammation (particularly pain and swelling) of the mucosa, and is known as sinusitis. If more than one sinus is affected, it is called pansinusitis.
These 10 animal facts will amaze you. The paranasal sinuses are spaces within 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 giving resonance to the voice.