part_of part of part of has_part has part has part contributes to morphology of autopod region digit limb digit acropodial unit A subdivision of the autopod that has as part a series of phalanges together with associated vasculature, musculature, integument and nerves. It is continuous with the metapodial subdivision of the autopod, but does not include the metapodials. In species such as humans, fully formed digits are distinct, whereas in other species the digits may be connected by interdigital webbing, or may be completely unseparated (for example, in cetaceans). digit (phalangeal portion) plus soft tissue autopodial extension acropodium region phalanx endochondral element digit plus metapodial segment