All of a triploblastic animal's tissues and organs are derived from the three germ layers of the embryo, the ectoderm, mesoderm and endoderm.
ˈɔːl əvə tɹˌɪpləblˈæstɪk ˈænɪməlz tˈɪʃuːz ænd ˈɔːɹɡənz ɑːɹ dᵻɹˈaɪvd fɹʌmðə θɹˈiː dʒˈɜːm lˈeɪɚz ʌvðɪ ˈɛmbɹɪˌoʊ, ðɪ ˈɛktoʊdˌɜːm, mˈɛsoʊdˌɜːm ænd ˈɛndoʊdˌɜːm.