. Animal parasites and human disease. Insect Vectors; Parasites; Parasitic Diseases; Medical parasitology; Insects as carriers of disease. TRICHOMONAS 119 n part of the large intestine and ccecum, often multiplying in prodigious numbers. Trichomonas also lives in the vagina and in the urinary tract, being quite often found in vaginal discharges, especially in cases of leucorrhea. It has been commonly believed that the vaginal parasite, which is larger than that of the intestine, is a distinct species, and it has been given the name T. vaginalis, but there is reason for believing that it is ide
. Animal parasites and human disease. Insect Vectors; Parasites; Parasitic Diseases; Medical parasitology; Insects as carriers of disease. TRICHOMONAS 119 n part of the large intestine and ccecum, often multiplying in prodigious numbers. Trichomonas also lives in the vagina and in the urinary tract, being quite often found in vaginal discharges, especially in cases of leucorrhea. It has been commonly believed that the vaginal parasite, which is larger than that of the intestine, is a distinct species, and it has been given the name T. vaginalis, but there is reason for believing that it is identical with the intestinal parasite. Other intestinal parasites are sometimes found in the urinary tract. This or a closely allied species is also occasionally found in the mouth, about the tartar of the teeth. Ac- cording to Goodey the mouth form differs from the intestinal form to a sufficient extent to warrant its being given a distinct name, at least ±. " provisionally, and he proposes the name Trichomonas {Tetratrichomo- nas) buccalis. Trichomonas intestinalis (Fig. 30) is a pear-shaped flagellate averaging about eight to 15 /x (^<jV<y to j^W of an inch) in length, the size being in- versely proportional to the rapidity of multiplication. It has three vig- orously moving flagella arising from the blunt anterior end and a fourth Wavy One which turns backward and FlG- ?°- Trichomonas intestinalis; n., nucleus; cyt., cytostome; axo., IS attached to the Side Ol the body by axostyle; par. b., parabasal body (?); an undulating membrane. Along the und-A ™-\™ du!*ting ™embrane- . & , . , , . X 2400. (After Wenyon.) line of attachment of the undulating membrane to the body is a structure which takes a deep stain, called the chromatic basal rod and believed by some workers to be a modified parabasal body. Arising near the anterior end and running through the body is a sort of supporting rod called the " axostyle," which, according to Kofoid and Swezy
Size: 1018px × 2454px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectparasites, bookyear19
