. Elementary text-book of zoology, general part and special part: protozoa to insecta. Animals. OEQAXIZATION A>"D DEVELOPMENT OF ANIMALS IN GENJiiiAL. 39 fibres have a wavy outline, and are arranged nearly parallel to one another (ligaments, tendons). In other cases they cross one another at an angle in different du"ections (dermis), or they present a net-like arrangement (mesentery). Fat tissue consists of ordinary connective tissue in which the cells are for the most part round and contain greater or smaller fat globules. If the normal fibrillse and bundles of fibrillae be treat
. Elementary text-book of zoology, general part and special part: protozoa to insecta. Animals. OEQAXIZATION A>"D DEVELOPMENT OF ANIMALS IN GENJiiiAL. 39 fibres have a wavy outline, and are arranged nearly parallel to one another (ligaments, tendons). In other cases they cross one another at an angle in different du"ections (dermis), or they present a net-like arrangement (mesentery). Fat tissue consists of ordinary connective tissue in which the cells are for the most part round and contain greater or smaller fat globules. If the normal fibrillse and bundles of fibrillae be treated with acids and alkalies, they swell up, and a second form of fibre, which resists these re-agents, comes into view. These are the elastic fibres (fig. 28), so called because they preponderate in tissue which is especially elastic. They present a tendency to branch and to form networks, and often possess great strength (ligamentum nucha;, arterial walls). They may also be spread out and connected together so as to form a perfo- rated membrane (fenestrated membrane). Cartilage is another form of connectivo tissue. It is characterized by the shaj^e of its cells, which are usually spherical, and its firm intercellular substance. The latter contains chondrin, and determines the rigidity of the tissue. Externally, cartilage is covered by a vascular connective tissue-coat, known as the perichondrium. When the intercellular substance is very slightly developed, we get tissues which are transitional between cellular connective tissue and cartilat^^ Elastic fibres, 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 Claus, Carl, 1835-1899; Metcalf Collection (North Carolina State University). NCRS. London, Swan Sonnenschein
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectanimals, bookyear1892
