How High Planes Fly. Planes equipped with jet engines fly at greater altitudes than propeller-driven aircraft. These include commercial flights, cargo jets and even private passenger jets. The air traffic control tower usually assigns a cruising altitude of up to 39,000 feet, but long flights are typically assigned higher altitudes. By keeping these planes at assigned altitudes, air traffic control creates invisible stacked highways in the sky, keeping enough air space between the flights.
Blockage to or damage in the fallopian tube is one of the causes of infertility. Fallopian tubes play an important role in ovulation, as well as conception. Once the female egg is released from the ovary, one of the fallopian tubes (i.e. the fimbriae) picks up the egg and pushes it to pass through the tube.
Women who are not trying to conceive may be completely unaware of their blocked fallopian tubes, since infertility is often the only symptom. Since a blockage in the fallopian tubes can prevent sperm and eggs from traveling freely, they may be unable to join and create a zygote.bdominal pain can also be caused by unrelated conditions, and it is not always (or even often) associated with blocked fallopian tubes. Still, the condition could be considered as a possibility for women who experience constant abdominal pain along with infertility or other symptoms of a blocked tube.