Answers. Best Answer: FL means Flight Level. It's used above 18.000ft (in the US, in other countries other altitudes are used as the boundary) to indicate the altitude in hundreds of feet. So FL230 is 23.000ft standard altitude.est Answer: FL means Flight Level. It's used above 18.000ft (in the US, in other countries other altitudes are used as the boundary) to indicate the altitude in hundreds of feet.
The nostrils, which form the external entrance of the nose, lead into the two nasal cavities, which are separated from each other by the nasal septum, a partition formed of cartilage and bone. Three bony ridges project from the outer wall of each nasal cavity and partially divide the cavity into three air passages.
Often, narrow nasal passages are the result of problems with the nasal septum and turbinates. The nasal septum and the turbinates are normal parts of the nose. The nasal septum is the structure that divides your nasal passages into the right and left sides. A deviated septum refers to a septum that is crooked. The turbinates are also inside the nose, near the septum.