《病原生物学》课程PPT教学课件（寄生虫学）旋毛形线虫 Trichinella spiralis

旋毛形线虫Trichinella spiralis人畜共患寄生虫。引起旋毛虫病（trichinellosis）成虫和幼虫分别寄生于同一宿主的小肠和横纹肌中

旋毛形线虫 Trichinella spiralis ◼人畜共患寄生虫。引起旋毛虫病 （trichinellosis） ◼成虫和幼虫分别寄生于同一宿主 的小肠和横纹肌中

TRICHNOSSTRCHINIASISTRCHNELLOSIS&Trichinella spiralis

TRICHINOSIS TRICHINIASIS TRICHINELLOSIS & Trichinella spiralis

TrichinosissymptomatologyIntestinalCirculationMyocardiumBrain andand musclemucosameninges(10-21 days)(24-72 hrs)(10-21 days)(14-28 days)Nausea,Edema,Chest pain,HeadacheVomitingperiorbitaltachycardia,(supraorbital),diarrhea,EKGchanges,conjunctivitis,vertigo,edema oftinnitus,Abdominalphoto phobia,fever,deafness,pain,extremities,chill,headache.mentalvascularthrombosis.apathy,sweating,muscle pain,delirium,coma, loss ofspasm,eosinophilia.reflexes

Trichinosis symptomatology Intestinal mucosa (24-72 hrs) Circulation and muscle (10-21 days) Myocardium (10-21 days) Brain and meninges (14-28 days) Nausea, Vomiting diarrhea, Abdominal pain, headache. Edema, periorbital conjunctivitis, photo phobia, fever, chill, sweating, muscle pain, spasm, eosinophilia. Chest pain, tachycardia, EKG changes, edema of extremities, vascular thrombosis. Headache (supraorbital), vertigo, tinnitus, deafness, mental apathy, delirium, coma, loss of reflexes

一、形态成虫细小呈线状早：3-4mm长，尾直而钝圆。含：1.5mm长，尾部末端有两叶交配附器。■幼虫100umx0.6um，寄生于横纹肌中的成熟幼虫，卷曲于梭形囊包中，一个囊包内常有1~2条幼虫

一、形态 ◼ 成虫 细小呈线状, ♀：3- 4mm 长，尾直而钝圆。 ♂：1.5 mm 长，尾部末端有两叶交配附器。 ◼ 幼虫 100umX0.6um, 寄生于横纹肌中的成熟幼虫，卷 曲于梭形囊包中，一个囊包内常有1~2条幼虫

雌虫雄虫成虫(adult)虫体细小，虫体后端稍粗，咽管长约占体长的1/3一1/2，咽管开始为毛细管形，然后膨大，之后文复变成毛细管状。雄虫比雌虫小，雄虫尾端具一对交配附器，无交合刺。雌虫尾部钝圆，阴门开口于虫体的前1/5处

Female adult

Female adult

Female adult

Female adult

Male adult

Male adult

larvae ofTrichinella0.1MM

larvae of Trichinella

Muscle CellIntemal FluidsGenital PrimordiumNerveRingBetaGanmaAipha0Apha1Apha2EsophagusMdgurHindgutlarvae ofTrichinella

larvae of Trichinella