. Parasites and parasitosis of the domestic animals : the zoo?logy and control of the animal parasites and the pathogenesis and treatment of parasitic diseases . Domestic animals. THE TAPEWORM 201 develop in almost any mammal to which they find access. The hog, however, is the most common host, and, from the point of view of pxjbhc health, the most important. As has been noted, the cysticercus of Taenia solium (Cysticercus cel- lulosce) is a more dangerous parasite than that of T. saginata, as it may lodge in organs such as the brain or eye with serious consequences. Man can readily bec
. Parasites and parasitosis of the domestic animals : the zoo?logy and control of the animal parasites and the pathogenesis and treatment of parasitic diseases . Domestic animals. THE TAPEWORM 201 develop in almost any mammal to which they find access. The hog, however, is the most common host, and, from the point of view of pxjbhc health, the most important. As has been noted, the cysticercus of Taenia solium (Cysticercus cel- lulosce) is a more dangerous parasite than that of T. saginata, as it may lodge in organs such as the brain or eye with serious consequences. Man can readily become a victim by auto-infection from his own armed tapeworm, the eggs of which may reach his stomach by way of the pyloris, or in being conveyed to the mouth by unclean fingers. By the latter means, moustache twirlers and nail biters are especially exposed. Fortunately, the United States is favored by the rarity of the pork tapeworm and consequently its cysts. Pig measles is most prevalent in. Fig. 112.—Stages in tapeworm larval development: a, six-hooked larva (hexaeanth or onchosphere) of Tsenia solium; b, cystic stage of same; c, same with head evaginated; d, ciliated larva of Diphyllobothrium latum; e, plero- cercoid of same—all enlarged (after Boas, by Kirkaldy and Pollard, from Leuckart). districts of foreign coimtries where bad hygienic conditions prevail; where pigs are kept near dwellings, and their flesh is eaten raw or im- perfectly cooked, conjoined with the practice of depositing human excrement in the open or spreading it upon the fields as fertihzer. In countries where sanitary control is of a more advanced standard the prevalence of the pork tapeworm has been greatly reduced. Location and Appearance.—The muscles most often invaded by the cysts are those of the tongue, neck, and shoulder, then, in order of frequency, the intercostals, abdominal, psoas, the muscles of the thigh, and those of the posterior vertebral region. Organs less often infested are the l
Size: 2087px × 1197px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1920, booksubjectdomesti, bookyear1920
