. A manual of zoology. Zoology. Fig. 39.—Cellular connective sub- stance. Cross-section through the notochord of a newly hatched Fig. 40.—Hornogeneous connective sub- stance of Sycandra raphanus (after F. E. Schulze). mass, while the cell-products are inconsiderable. The ceUs are large, vesicular bodies which are closely pressed together and are consequently polygonal (fig. 39). They have between them a firm but thin layer of intercellular substance. Homogeneous Connective Tissue.—In homogeneous connective substance the intercellular substance (or matrix) is usually present in consider
. A manual of zoology. Zoology. Fig. 39.—Cellular connective sub- stance. Cross-section through the notochord of a newly hatched Fig. 40.—Hornogeneous connective sub- stance of Sycandra raphanus (after F. E. Schulze). mass, while the cell-products are inconsiderable. The ceUs are large, vesicular bodies which are closely pressed together and are consequently polygonal (fig. 39). They have between them a firm but thin layer of intercellular substance. Homogeneous Connective Tissue.—In homogeneous connective substance the intercellular substance (or matrix) is usually present in considerable quantity as a transparent mass, sometimes soft like jelly, often firmer (fig. 40). The cells lying in it are either spherical or send branching processes into the matrix. Such processes may unite to form meshes which, like a pseudopodial network, unite cell to cell. Frequently the matrix contains, in addition, isolated firm fibres or threads, which, on account of their physical characteristics, are called elastic fibres, and consist of a substance (clastin) exceedingly resistant to all reagents. Finally, in the matrix there may develop the finer connective-tissue filjrils characteristic of the next group; they may become so increased in number as to determine the character of the tissue. Fibrous Connective Tissue is characterized by the rich supply of connective-tissue fibrilte; these are fibres of extraordinary fineness, lying in a homogeneous matrix, which is the less evident the richer it is in. 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 Hertwig, Richard, 1850-1937; Kingsley, J. S. (John Sterling), 1854-1929, ed. and tr. New York, H. Holt
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectzoology, bookyear1912
