* The full technical name of this muscle is pronator teres. The other pronator muscle, known as pronator quadratus, is depicted in the third drawing as a square band joining the two forearm bones close to the wrist (see Keele, Leonardo da Vinci’s Elements of the Science of Man, p. 270).

Get Learning from Leonardo now with the O’Reilly learning platform.

O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.

Start your free trial