Which of the two ovaries – left or right – ovulates appears random; no left and right coordinating process is known. Occasionally both ovaries will release an egg; if both eggs are fertilized, the result is fraternal twins. After release from the ovary, the egg is swept into the fallopian tube by the fimbria – a fringe of tissue at the end of each fallopian tube. After about a day, an unfertilized egg will disintegrate or dissolve in the fallopian tube, and a fertilized egg will reach the uterus in three to five days.