A significant portion of the work is dedicated to the features of the head. By isolating the eye, nose, and mouth, Vanderpoel demonstrates how these elements are not mere "symbols" on a face but are deeply integrated into the skull's architecture. Enduring Impact and Limitations

The book is renowned for its hundreds of pencil and charcoal drawings that illustrate minute details of the face and limbs.

Vanderpoel’s primary contribution to art instruction is the shift from "naming" muscles to "seeing" them as three-dimensional volumes. While contemporary works often prioritize forensic accuracy, The Human Figure treats the body as a series of interlocking planes.

Vanderpoel breaks down complex organic shapes into manageable geometric planes. This approach allows artists to understand how light interacts with the surface, a technique later popularized by the "Bridges" or "Reilly" methods.