Complex sentence: This subdivision is effected by a fold which extends deeply into the proximal part of the ductus endolymphaticus, with the result that the utricle and saccule ultimately communicate with each other by means of a Y-shaped canal.
Split into simpler sentences: This subdivision is effected by a fold which extends deeply into the proximal part of the ductus endolymphaticus. The result being the utricle and saccule can now communicate with each other by means of a Y-shaped canal.