Rui Diogo: Department of Anthropology, George Washington University, Washington, DC, USAJosep M. Potau: Department of Anatomy and Embryology, University of Barcelona, Barcelona, SpainJuan F. Pastor, Felix J. dePaz, Eva M. Ferrero: Department of Anatomy, Universidad de Valladolid, Valladolid, SpainGaëlle Bello: Department of Animal Biology, University of Barcelona, Barcelona, SpainMercedex Barbosa: Department of Anatomy, Universidad de Valladolid, Valladolid, SpainBernard A. Wood: Department of Anthropology, George Washington University, Washington, DC, USA

• Introduction and Aims. Methodology and Material. Head and neck musculature. Pectoral and upper limb musculature. Trunk and back musculature. Diaphragmatic and abdominal musculature. Perineal, coccygeal and anal musculature. Pelvic and lower limb musculature. Figures. Appendix I: Literature including information about the muscles of gorillas. Appendix II: Literature cited, not including information about the muscles of gorillas.

Rui Diogo: Department of Anthropology, George Washington University, Washington, DC, USAJosep M. Potau: Department of Anatomy and Embryology, University of Barcelona, Barcelona, SpainJuan F. Pastor, Felix J. dePaz, Eva M. Ferrero: Department of Anatomy, Universidad de Valladolid, Valladolid, SpainGaëlle Bello: Department of Animal Biology, University of Barcelona, Barcelona, SpainMercedex Barbosa: Department of Anatomy, Universidad de Valladolid, Valladolid, SpainBernard A. Wood: Department of Anthropology, George Washington University, Washington, DC, USA

• Introduction and Aims. Methodology and Material. Head and neck musculature. Pectoral and upper limb musculature. Trunk and back musculature. Diaphragmatic and abdominal musculature. Perineal, coccygeal and anal musculature. Pelvic and lower limb musculature. Figures. Appendix I: Literature including information about the muscles of gorillas. Appendix II: Literature cited, not including information about the muscles of gorillas.