The anatomy of the muscles and skeleton is described in the Hippocratic Corpus, an Ancient Greek medical work written by unknown authors.
ðɪ ɐnˈæɾəmi ʌvðə mˈʌsəlz ænd skˈɛlᵻtən ɪz dᵻskɹˈaɪbd ɪnðə hˌɪpəkɹˈæɾɪk kˈɔːɹpəs, ɐn ˈeɪntʃənt ɡɹˈiːk mˈɛdɪkəl wˈɜːk ɹˈɪʔn̩ baɪ ʌnnˈoʊn ˈɔːθɚz.