The ethmoid sinuses are located within the human skull between the eye sockets and above the nose. Ethmoid sinuses are matchbox-sized areas filled with 7 to 10 interconnected bubbles made of very thin-walled bone. These bubbles are lined with mucous membrane and each bubble has its own opening to drain into the nasal cavity.
When the lining of the ethmoid sinuses become inflamed, they swell. This inflammation and swelling causes a blockage of the ostia. This reduces the flow of mucous, which result in the accumulation of mucous in the ethmoid sinuses. This builds up eventually and results in an infection known as Ethmoid Sinusitis or Ethmoiditis. |
