. The elements of pathological histology with special reference to practical methods . Fig. 89.—Ovum of Trichocephalus Dispar (from Heller), x 350. surrounded by a double-contoured shell, which shows a conical pro-tuberance (lid) at each pole. {e) Trichina spiralis.—This occurs in man and many mammalian TRICHINA SPIRALIS 179 animals, as intestinal trichince in the fully developed and sexuallymature condition, and as muscle trichince in the undeveloped state. .1 B. Fig. 90.— Sexually Maturf,Trichina Spiralis (from Leuc-k:irt). X 120. A, Male ; B,Female, Fig. 91.—Muscle Trichina, x ICO. a. Parti
. The elements of pathological histology with special reference to practical methods . Fig. 89.—Ovum of Trichocephalus Dispar (from Heller), x 350. surrounded by a double-contoured shell, which shows a conical pro-tuberance (lid) at each pole. {e) Trichina spiralis.—This occurs in man and many mammalian TRICHINA SPIRALIS 179 animals, as intestinal trichince in the fully developed and sexuallymature condition, and as muscle trichince in the undeveloped state. .1 B. Fig. 90.— Sexually Maturf,Trichina Spiralis (from Leuc-k:irt). X 120. A, Male ; B,Female, Fig. 91.—Muscle Trichina, x ICO. a. Partially calci-fied trichina; b, Calcified trichiiipe after solution of thelime-salts. 180 THE ANIMAL PARASITES (1) Intestinal trichince (Fig. 90).—The male (A) is 15 mm. longand carries four knob-like papillie between the two conical projec-tions at the end. The female (B) is almost twice as long, and itstubular ovary, situated at the posterior extremity of the body,passes forwards into the uterus, in which the development of the ovainto embryos takes place. The latter, however, are not evacuatedwith the faeces, but bore through the intestinal wall of the host, andthen migrate into the transversely striated muscles (in largest numbersinto the diaphragm, tongue, intercostal muscles, and those of the throatand larynx), in which they accumulate, especially near the tendons,and grow in about a fortnight into fully formed muscle trichinje. (2) Muscle trichin
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectpatholo, bookyear1895
