. A text-book of comparative physiology for students and practitioners of comparative (veterinary) medicine . thl. Fig. 447.—Vertical section of articular cartilage resting on bone, and showing cellsand capsules arranged in layers as indicated by numerals (Sappey). (Fig. 444). A vertical cross - section exhibits the lamella? ofwhich it is made up and the vascular channels cut across(Fig. 445). All this is, however, only the framework of osseous a bone from an animal freshly killed, without bleeding, beexamined, a very different state of things will be found. Thebone is heavier; its s
. A text-book of comparative physiology for students and practitioners of comparative (veterinary) medicine . thl. Fig. 447.—Vertical section of articular cartilage resting on bone, and showing cellsand capsules arranged in layers as indicated by numerals (Sappey). (Fig. 444). A vertical cross - section exhibits the lamella? ofwhich it is made up and the vascular channels cut across(Fig. 445). All this is, however, only the framework of osseous a bone from an animal freshly killed, without bleeding, beexamined, a very different state of things will be found. Thebone is heavier; its surface is covered with a closely adherent,tough, fibrous structure, the periosteum : and its medullarycavity filled with marrow. If the bone be broken across, itssection looks red, and blood flows from the surface. Investiga-tion proves that the covering periosteum is a bed in whichblood-vessels and nerves ramify, and from which they enter 608 COMPARATIVE PHYSIOLOGY- the openings to be seen on the surface of the dead bone. TheHaversian canals are vascular channels, and the lacunae filledwith bone corpuscles
Size: 1814px × 1377px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, bookpublishernewyo, bookyear1890
