Bone- structure
A Long bone (the humerus)
B Section through a long bone
1 Shaft (diaphysis)
2 End (epiphysis)
3 Articular cartilage
4 Epiphyseal line
5 Cancellous (spongy) bone, containing red
marrow
5a Trabeculae
6 Compact bone
7 Medullary cavity containing yellow marrow