module 12 - integrated body systems PARASITOLOGY - Helminth Zoonoses/ Exam Review questions and answers, graded A+/ verified.[LATEST EXAM UPDATES]

module 12 - integrated body systems PARASITOLOGY - Helminth Zoonoses/ Exam Review questions and answers, graded A+/ verified. 1 Q What are the two main modes of transmission of zoonotic helminth infection? A Ingestion of eggs from infected animals or the environment Ingestion of infected foodstuffs 2 Q List two common zoonotic helminths found in the dog A Toxocara canis Echinococcus granulosus granulosus 3 Q List two common zoonotic helminths found in the pig A Trichinella spiralis Taenia solium 4 Q Describe the lifecycle of toxocara canis A 1. Eggs containing L3 larvae are ingested 2. L3 hatch in the small intestine 3. L3 migrate to the tissues and go into arrest 4. L3 activate in response to pregnancy (around 3 weeks pre-partum) 5. L3 migrate across the placenta and into the foetal lungs 6. At birth, L3 migrate to the small intestine of the puppy via the trachea where they are coughed up and ingested 7. L3 develop into L4 larvae and then into adults in the small intestine