. Internal medicine; a work for the practicing physician on diagnosis and treatment, with a complete Desk index. s. Most common in children, it may be encountered at any symptoms in addition to local irritation and itching are restless-ness, disturbed sleep, loss of appetite, and anaemia. Fig. 299.—1, dorsal aspect of head ofAscaris lumbricoides; 2. ventral aspect ofhead; 3, tail of male; 4, lateral aspect of tailof female; 5, ventral surface of tail offemale—After Claus. ii. Trichiniasis. The disease is caused by the embr^-os of Trichinella spiralis, which passfrom the intestines and
. Internal medicine; a work for the practicing physician on diagnosis and treatment, with a complete Desk index. s. Most common in children, it may be encountered at any symptoms in addition to local irritation and itching are restless-ness, disturbed sleep, loss of appetite, and anaemia. Fig. 299.—1, dorsal aspect of head ofAscaris lumbricoides; 2. ventral aspect ofhead; 3, tail of male; 4, lateral aspect of tailof female; 5, ventral surface of tail offemale—After Claus. ii. Trichiniasis. The disease is caused by the embr^-os of Trichinella spiralis, which passfrom the intestines and are distributed widely throughout the body, butfind the conditions necessary to their further development only in thefibres of the transversely striated muscles, in which they develop intoencapsulated larvae. Trichinella Spiralis.—The male measures mm. in lengthand mm. in breadth; the female 3-4 mm. in length and mm. indiameter. This parasite in the adult stage inhabits the small intestine ofman and various mammals, esiDecially the hog. The larvae are mm. 264 MEDICAL Mp^^^^^^^Mi in length and infest the striated muscles, in which they ^?^^^^^^^i^^^^^®^^ Hq coiled spirally in ovoid capsules which mostly havetheir longitudinal axis parallel with the long axisof the muscular fibres. It has been experimentally demonstrated that theencysted larvee, shortly after their introduction intothe stomach, are freed from their capsules by theaction of the gastric juice and pass into the upper partof the small intestine, where they quickly attain theiradult form. Copulation takes place in the course oftwo or three days, after which the males die and thefemales, which are viviparous, penetrate the intestinalmucosa and reach the lymph spaces, in which theydeposit their young. Carried by the lymph streamand ultimately by the blood current the embryos invadethe striated muscles, in which encapsulation takes the ninth or tenth day after ingestion
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectmedicine, bookyear192
