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.
The possible functions of the sinuses are as follows:     1. air conditioning 2. pressure damping 3. reduction of skull weight 4. heat insulation 5. flotation of skull â¦ in water 6. increasing the olfactory area 7. mechanical rigidity 8. vocal resonance and diminution of auditory feedback. 9 There are four pairs sinuses, the maxillary is largest, then frontal ,ethmoidal and sphenoidal is (below eye sockets) is to provide mucous and act as a resonance chamber for sound +lighten weight of the skull. 10.