5 Written questions
5 Matching questions
- Paragonimus westermani - 1. acetabulum 2. sex 3. morphology 4. tegument 5. reproductive system
- D. dendriticum - 1. Acetabulum 2. morphology 3. reproductive system 4. egg 5. what occupies middle third of organism?
- Diagnosis of p. westermani - can often be mistaken for, in brain?
- Life cycle of D. dendriticum (probs the only important thing to know about it)
- Common name for D. dendriticum - why?
- a 1. distome 2. monoecious but prefers cross fertilization 3. Adults look like coffee beans and are unusually thick 4. Tegument covered in spines 5. reproductive system - ovaries left of midline, vitelline follicles at lateral ends.
- b 1. Eggs in feces 2. (Cionella lubrica in U.S snail eats egg) 3. Miracidium in snail intestine to digestive gland 4. mother sporocyst to daughter sporocyst 5. no redia - to cercaria (tailed). 6. Cercaria accumulate in mantle cavity and irritation causes mucous building and slime balls 7. (Formica fusca ant eats slime ball and ingest cercaria) 8. Cercaria penetrate ant gut and encysts as metacercaria inside ant hemocoel 8. One cercaria migrates to subesophageal ganglion and becomes brainworm and alters ant behavior. Remains at grass tip and eaten 9. Ruminent eats ant and metacercaria excyst in duodenum, juveniles migrates to bile duct. Adults in bile duct produce eggs.
- c finds eggs in sputum or feces, biopsy, ELISA, x ray or CT. Can often be mistaken for tuberculosis, pneumonia, spirochaetosis in lungs, or tumors, encephalitis, hydatids in brains.
- d Lancet fluke, pointed body
- e 1. distome 2. pointed ends 3. Testes are anterior to ovary. Prominent uterus, 4. Operculated egg 5. Vittelline glands occupy the middle third of the organism.
5 Multiple choice questions
- sheep, cattle, goats, pigs
- bile duct
- D. dendriticum
- Asia, Africa, Central and South America. About 20 million people infected. Habitat is swift flowing streams and snail habitats.
- because we don't eat infected ants on grass.
5 True/False questions
Paragonimus kellicotti - similar to x, and is a form of x - where is it located? → similar to P. westermani, form of lung fluke. In US, fun research saying that they had alcohol and ate weird **** and got this parasite.
Pathology and Symptoms of P. westermani → Migration of juveniles through coelom to lungs doesn't cause much damage, unless certain special tissues are hit. But once they get into lungs they stimulate an inflammatory response that surrounds the pair in granular tissue - causing ulcers, bleeding, fibrosis. Eggs form granulomas. Symptoms are breathing difficulties, chronic cough, bloody sputum - and if juvis migrate to spinal cord or heart or brain they can cause paralysis, heart attack or death from granulomas.
Pickling does not kill → Praziquantel.
Common name for Paragonimus westermani → Lancet fluke, pointed body
Treat P. westermani with → Praziquantel.