Mammalia: Skin, Muscles, Skeleton 



599 



GROWTH Dl SC 



GROWTH DISC 



fjgPERICHONDR 



BONE 



IUSGE-T ■ \ 



--MARROW 



GROWTH DISC. 



Fir.. 463. Diagrams illustrating four stages in the development of a long bone. 

 Perichondral bone cross-hatched; endochondral bone stippled; marrow black; carti- 

 lage unshaded. (After Corning and Duval. Courtesy, Neal and Hand: "Choi date 

 \natonn." Philadelphia. The Blakiston Company.) 



'ARTICULAR LIGAMENT 



Fig. 464. Diagram of the structure of a long bone. (Alter kahn. Courtesy, Neal 

 and Rand: "Chordate \natomy," Philadelphia. The Blakiston Company.) 



