(Chapter 13) Footnote 7:

Herophilus of Chalcedon (4-3 cent. BC), the most important of the Greek anatomists in Alexandria who dissected human cadavers, is frequently cited by Galen. His contributions to nomenclature are noteworthy for their use of visual comparisons. The word parasta/thj generally means “companion,” or “bystander,” and is applied to the twin spermatic ducts as well as the hyoid bone conceived as the companion to the larynx. See May 1968, p. 26.