Diagnostic methods, chemical, bacteriological and microscopical, a text-book for students and practitioners . Fig. 54.—Opisthorchis sin-ensis: ventral surface, stretched;a, oral sucker; b, ceca; c, geni-talpore; <i, acetabulum;e, uterus; /, vitelline glands;^, ovary; A, receptaculum sem-inis; /, Laurers canal; i, test-icles; k, excretory canal; m, ex-c r e t o r y pore. {Tyson afterBraun.) PARASITES. i6i This worm, which is more common in the dog, has been reported a num-ber of times in man. It is the largest of the nematode worms and has itshabitat in the pelvis of the kidney. Little is kn
Diagnostic methods, chemical, bacteriological and microscopical, a text-book for students and practitioners . Fig. 54.—Opisthorchis sin-ensis: ventral surface, stretched;a, oral sucker; b, ceca; c, geni-talpore; <i, acetabulum;e, uterus; /, vitelline glands;^, ovary; A, receptaculum sem-inis; /, Laurers canal; i, test-icles; k, excretory canal; m, ex-c r e t o r y pore. {Tyson afterBraun.) PARASITES. i6i This worm, which is more common in the dog, has been reported a num-ber of times in man. It is the largest of the nematode worms and has itshabitat in the pelvis of the kidney. Little is known of its life history. IV. Parasites of the Skin. Arthropoda. These are bilaterally symmetrical segmented animals whose segmentsdo not correspond, but vary in structure, and which primitively bear upon eachsegment a pair of jointed appendages. The segments are often more or lessfused, thus forming special body-regions which may themselves be more or less. Fig. 55.—Eustrongylus gigas: female, natural size, in kidney of dog.{Tyson after Railliet.) fused together as well. The covering of these animals is a comparativelythick and strong cuticle which remains pliable between the segments of thebody and of the jointed appendages, but which commonly becomes hard andshell-like from chitinous or calcareous material directly over the different body-segments and internodes of the jointed appendages. This arrangement re-quires that in the growth of the individual the firm external covering shouldfrom time to time be shed, such changes taking place periodically and beingknown as moults. While each segment in the primitive animal is provided witha pair of jointed appendages, these in the individual species are often lostfrom this of that part of the body, or may remain rudimentary and inconspicu-ous or may take on special features of structure from the assumption of specialfunction which causes their wide departure from the original and common typ
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Keywords: ., bookcentury1900, bookdecade1910, bookpublis, booksubjectdiagnosis
