The reference is to Alessandro Benedetti’s Anatomice sive de historia corporis humani (1502). The Greek medical terminology he used was also revived in the same year by the re-publication of Julius Pollux’s 2nd cent. AD Onomasticon. See O’Malley 1964, p. 146 and Ferrari 1996 passim on Benedetti. Charles V’s grandfather Maximilian I was Holy Roman Emperor between 1493 and 1519.