. Elements of histology. Histology. Bone. 8r sliaft of a long bone—tlie concentric lamella? are first absorbed, the Ha- be- way and versian canal ing in this widened out again transformed into a Haversian space. While, then, the bone first de- posited by the peri- osteum is of a spongy character, and gradually be- comes transformed into comi3act_, the reverse is ""oing on at the same time near the marrow cavity, inasmuch as compact bone is here changed into spongy bone, and this ultimately dis- a23pears and be- comes absorbed by the mari'ow. 73. At birth all the primary en- dochondra
. Elements of histology. Histology. Bone. 8r sliaft of a long bone—tlie concentric lamella? are first absorbed, the Ha- be- way and versian canal ing in this widened out again transformed into a Haversian space. While, then, the bone first de- posited by the peri- osteum is of a spongy character, and gradually be- comes transformed into comi3act_, the reverse is ""oing on at the same time near the marrow cavity, inasmuch as compact bone is here changed into spongy bone, and this ultimately dis- a23pears and be- comes absorbed by the mari'ow. 73. At birth all the primary en- dochondral bone «. has already disap- peared by absorp- tion from the centre of the shaft, and the bone present is all of periosteal origin shaft. Fig. 55.—From a Longitudinal Section Femur of Rabbit, through the part in which the intermediate cartiLige joins the end of the shaft. {Atlas.) a, Intermediate cartilage; 6, zone of calcified cartilage ; c, zone in which the calcified tra- heculEB of cartilage become gradiiRlly in- vested in osseous substance, shaded light in the figure; the spaces between the tral>e- cula3 contain marrow, and the cai> blood-vessels are seen here to end in loops ; d, in this zone there is more bone formed; the greater amount the farther away from this zone. At the extremity of the however, tlie spongy bone is all endochondral G. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Klein, E. (Edward), 1844-1925; Edkins, John Sydney, b. 1865. Philadelphia : Lea Brothers
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Keywords: ., bookcentury1800, bookdecade1890, bookpublisherphiladelphialeabro
