part_of part of part of has_part has part has part existence starts during existence ends during fully formed stage embryo stage limb limb segment limb region subdivision of limb free limb segment region of limb segment of limb extremity part A major subdivision of a mature or developing limb, including both skeletal elements (or the mesenchyme that gives rise to the skeletal elements) and associated tissues, such as muscle, connective tissue, integument. Examples: autopod region, zeugopod region, stylopod region, metapodial region, arm region. Excludes the limb girdles. paired limb/fin segment subdivision of organism along appendicular axis skeletal muscle organ