Elements of histology (1898) Elements of histology elementsofhistol00klei Year: 1898 82 Elements of Histology. bone, and it continues to grow into the interme- diate cartilage as stated above, so long as the bone grows as a whole (Fig. 55). Of course the parts of this spongy bone nearest to the centre '^' \%%%%%%%%%%%%%%%% ^^§)^ Fig. 5(3.—Small mass of Boiie Substance in the Periosteum of the Lower Jaw of a Human Foetus. [Atlas.) tt,Osteou'enetic liiyer of periosteum ; l>. cells, Tbe one in the midcile of the upper margin is an osteoclast, whereas
Elements of histology (1898) Elements of histology elementsofhistol00klei Year: 1898 82 Elements of Histology. bone, and it continues to grow into the interme- diate cartilage as stated above, so long as the bone grows as a whole (Fig. 55). Of course the parts of this spongy bone nearest to the centre '^' \%%%%%%%%%%%%%%%% ^^§)^ Fig. 5(3.—Small mass of Boiie Substance in the Periosteum of the Lower Jaw of a Human Foetus. [Atlas.) tt,Osteou'enetic liiyer of periosteum ; l>. cells, Tbe one in the midcile of the upper margin is an osteoclast, whereas the smaller one at the left upper corner appears concerned in the fornntion of bone. Above c the osteoiihist cells become surrounded by osseous substance and thus become converted into bone cells. of the shaft are the oldest, and ultimately dis- appear by absorption into the central medullary cavity. In the epiphysis the spongy bone is also endochondral bone, and its formation is connected with the deep layer of the articular cartilage, but more so with the hyaline cartilage separating the epiphysial spongy bone from the intermediate carti- lao-e (see c of Fisj. oi). Underneath the periosteum and on the surface of the spongy endochondral bone at the extremity of the shaft, the periosteal bone is represented only by a
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