. Comparative zoology, structural and systematic : for use in schools and colleges. Zoology; Anatomy, Comparative; Physiology, Comparative. ORGANIZATION. 39 ber" of whales), between the muscles (as in "streaky" meat), or in the abdominal cavity, in the omentum, mes- entery, or about the kidneys. The marrow of bones is an example. Globules of fat occur in many Molluscs and Insects; but true adipose tissue is found only in back- boned animals, particularly the herbivorous. In the aver- age Man, it constitutes about part of his weight, and a single Whale has yielded 120 tons of oil
. Comparative zoology, structural and systematic : for use in schools and colleges. Zoology; Anatomy, Comparative; Physiology, Comparative. ORGANIZATION. 39 ber" of whales), between the muscles (as in "streaky" meat), or in the abdominal cavity, in the omentum, mes- entery, or about the kidneys. The marrow of bones is an example. Globules of fat occur in many Molluscs and Insects; but true adipose tissue is found only in back- boned animals, particularly the herbivorous. In the aver- age Man, it constitutes about part of his weight, and a single Whale has yielded 120 tons of oil. The fat of animals has the different names of oil, lard, tallow, suet, spermaceti, etc. It is a reserve of nutriment in excess of consumption, serving also as a packing material, and as a protection against cold. (7) Muscular Tissue.—If we examine a piece of lean meat, we find it is made up of a number of fasciculi, or bundles of fibres, placed side by side, and bound together by connective tissue. The microscope informs us that each fibre is itself a bundle of smaller fibres; and when one of these is more closely examined, it is found to be enclosed in a delicate, glossy tube, called the sarcolemma. This tube is filled with n , Fig. 11.—Striated Muscular Fibre (of the Pig), very minute, parallel x 200. The coustitueut fibres are seen at a; fibrils, averaging TJ^jnr cisa fascicu1^« of an inch in diameter, and having a striated aspect. Tissue of this description constitutes all ordinary muscle, or " lean meat," and is marked by regular cross-lines, or strice. Besides this striated muscular tissue, there exist, in the coats of the stomach, intestines, blood-vessels, and some oth- er parts of Vertebrates, smooth muscular fibres, or mem-. 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 Orton, Ja
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectzoology, bookyear1883
