. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. SEROUS AND SYNOVIAL MEMBRANES. 517 gress towards the trochanter of the femur, is a convenient one for examination. On making a thin section parallel to the osseous surface, it is found that the bands of the white fibrous element which constitute the periosteum are considerably changed where they line the bursse. They are much less wavy than usual, and, at the same time, have become much more brittle and transparent. Besides be- coming more linear, the markings have altered in another respect, viz. they are much less freq
. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. SEROUS AND SYNOVIAL MEMBRANES. 517 gress towards the trochanter of the femur, is a convenient one for examination. On making a thin section parallel to the osseous surface, it is found that the bands of the white fibrous element which constitute the periosteum are considerably changed where they line the bursse. They are much less wavy than usual, and, at the same time, have become much more brittle and transparent. Besides be- coming more linear, the markings have altered in another respect, viz. they are much less frequent, and are placed at more regular dis- tances. The ordinary epithelium which else- where lines the cavity has disappeared, and, in its stead, we recognise a great number of cells irregularly scattered over the surface of the specimen; although even now one may perhaps trace an approach to a longitudinal arrangement in their greater proximity in this direction. These cells, in respect of their solidity, their somewhat angular shape, their colourless transparency, and refractility, greatly resemble those seen in articular cartilage. They are, in fact, cartilage corpuscles. But although exactly on the surface these cells are somewhat flattened, and scattered with com- parative irregularity, this appearance bv no means extends any depth in the tissue. A slight alteration of the focus shows that, im- mediately beneath the surface, corpuscles are not only less numerous, but also assume a dis- tinctly linear arrangement; and form somewhat interrupted longitudinal rows, which chiefly occupy the interstices of the altered bands of white fibrous tissue. The corpuscles them- selves are here more angular and elongated. By further altering the focus, and obtaining a deeper view, the lines marking these sur- faces are seen to be crossed by others; and a closer inspection reveals the existence of two strata: one, the superficial layer just ex- amined, of which the lines are in the directi
Size: 1354px × 1844px
Photo credit: © Central Historic Books / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bo, booksubjectanatomy, booksubjectphysiology, booksubjectzoology
