Developmental binlnov 不同的器官具有不同的内在生长程序 Length 9 Humerus Humerus H Ulna C-Humerus Wrist Scapula 0 357911131517 Phalanx I Time after initial formation(days) Radius Fig. 14.7 Comparative growth of the Humerus cartilaginous elements in the embryonic chick wing. When first laid down, the cartilaginous elements of the humerus carpus uIna and wrist are the same size, but the Metacarpus Ulna humerus and ulna then grow much more Figure 9-22 Formation of the skeleton in the mammalian forelimb than the wrist elementDevelopmental Biology 不同的器官具有不同的内在生长程序