part_of part of part of parallel to adjacent to adjacent to mesotarsomere 2 mesotarsomere 5 mesotarsus with 5 mesotarsomeres line adjacent to mesotarsomeres 2-5 of mesotarsus with 5 mesotarsomeres The anatomical line parallel to the proximal-distal axis that is adjacent to: 1) the proximal margin of mesotarsomere 2 of mesotarsus with 5 mesotarsomeres; and 2) the distal margin of mesotarsomere 5 of mesotarsus with 5 mesotarsomeres. proximal-distal axis proximal margin distal margin anatomical line