Xaismboun special region was created in 1994-06. Change Notice 1 to FIPS PUB 10-4, dated 1998-12-01, lists a division of Laos into 16 provinces, one city, and one special zone. ISO 3166-2 Newsletter Number I-2 was published on 2002-05-21. It showed Xaismboun special region, but called it a province.
THE PARANASAL SINUSES. There are four pairs of paranasal sinuses, the frontal sinuses are located above the eyes, in the forehead bone. The maxillary sinuses (antra of Highmore) are located in the cheekbones, under the eyes. The ethmoid sinuses, also called ethmoid labyrinth are located between the eyes and the nose.here are four pairs of paranasal sinuses, the frontal sinuses are located above the eyes, in the forehead bone. The maxillary sinuses (antra of Highmore) are located in the cheekbones, under the eyes.
Human sinuses are broken into four groups known collectively as the paranasal sinuses. These four groups are: maxillary, frontal, sphenoid and ethmoids. All four are located in the bones of our skulls, but they are also attached to the nose. When one of them becomes infected it can affect more than just the nasal passages. It can cause pain and swelling in the eyes, face, or jaw. For example, the maxillary sinuses; which are located beneath the eyes and also in the facial cheekbones on the side of the nose, can cause jaw pain when they become infected.