Study of a skeleton by William Edward Frost. 1829.© Victoria and Albert Museum, London

Anatomical drawing of a human skeleton, England, 1840, Linnell, John, Science Museum, Blythe House, 1840. Object No. 1979-404. © This image is available for use under the following license: CC-BY-NC-ND 2.0

Human Skeleton, Anterior View. George Stubbs, 1724–1806. Courtesy of the Yale Center for British Art, Paul Mellon Collection.

Human Skeleton, Posterior View. George Stubbs, 1724–1806. Courtesy of the Yale Center for British Art, Paul Mellon Collection.

Study of the muscles of a male figure by William Edward Frost. 1829. © Victoria and Albert Museum, London

Daniel Huntington (American, 1816-1906). Skeleton Study, ca. 1848. Brooklyn Museum, Gift of The Roebling Society, 68.167.3

Daniel Huntington (American, 1816-1906). Écorché (Figure Study of Musculature), ca. 1848. Brooklyn Museum, Gift of The Roebling Society, 68.167.4

Muscles and tendons of the back: écorché figure. Red chalk and pencil drawing by or associated with A. Durelli, ca. 1837. Credit: Wellcome Library, London. Copyrighted work available under Creative Commons Attribution only license CC BY 4.0

An écorché figure (lifesize), lying prone on a table Chalk drawing by Charles Landseer, 1813. Credit: Wellcome Library, London. Copyrighted work available under Creative Commons Attribution only license CC BY 4.0

Lateral view of the trunk of a flaye. Chalk drawing, 1813-1815. Credit: Wellcome Library, London. Copyrighted work available under Creative Commons Attribution only license CC BY 4.0

Partial dissection showing the deltoid and pectoralis muscles. Watercolour by Johann Conrad Zeller, 1833.Credit: Wellcome Library, London. Copyrighted work available under Creative Commons Attribution only license CC BY 4.0

Muscles and tendons of the neck, arm and trunk: two écorché figures. Red chalk and pencil drawing by A. Durelli, ca. 1837. Credit: Wellcome Library, London. Copyrighted work available under Creative Commons Attribution only license CC BY 4.0

Head and neck of an écorché figure, in profile. Red and black chalk drawing, with pencil, by C. Landseer, 1815. By: Charles Landseer. Credit: Wellcome Library, London. Copyrighted work available under Creative Commons Attribution only license CC BY 4.0

Muscles of the neck: head and neck of an écorché figure, and small sketch of a head and neck. by Charles Landseer, c. 1815. Credit: Wellcome Library, London. Copyrighted work available under Creative Commons Attribution only license CC BY 4.0

Head and neck of an écorché figure, seen from behind, and small sketch of male nude in action. Red chalk and pencil drawing, by C. Landseer, 1815. Credit: Wellcome Library, London. Copyrighted work available under Creative Commons Attribution only license CC BY 4.0