Falloppio's own work dealt mainly with the anatomy of the head. He added much to what was known before about the internal ear and described in detail the tympanum and its relations to the osseous ring in which it is situated. He also described minutely the circular and oval windows (fenestræ) and their communication with the vestibule and cochlea. He was the first to point out the connection between the mastoid cells and the middle ear. His description of the lacrimal ducts in the eye was a marked advance on those of his predecessors and he also gave a detailed account of the ethmoid bone and its cells in the nose. His contributions to the anatomy of the bones and muscles were very valuable. It was in myology particularly that he corrected Vesalius. He studied the reproductive organs in both sexes, and described the Fallopian tube, which leads from the ovary to the uterus and bears his name to this day.