Medical Parasitology 7th Edition Leventhal Test Bank

Chapter 2. Nematoda A clinical sign that may suggest the presence of a filarial nematode infection is: a. Diarrhea Eosinophilia c. Jaundice Microcytic anemia The nematode infection that may become more severe through ingestion of infective eggs, especially in infected infants, is: Ancylostoma duodenale b. Enterobius vermicularis c. Strongyloides stercoralis d. Trichinella spiralis In the Ascaris lumbricoides life cycle, after eggs are ingested, the next stage in the life cycle that must occur before a mature adult can live in the host’s intestine is called the: Diagnostic stage b. Infective stage Liver-lung migration d. Method of infection Patients who have heavy infections with Necator americanus may exhibit all of the following symptoms EXCEPT: Diarrhea Larval dermatitis c. Macrocytic anemia d. Microcytic anemia Leventhal: Medical Parasitology, Ed. 7                                                        Multiple Choice Questions - Chapter 2 The nematode egg that appears as a barrel-shaped structure with clear polar plugs at each end of the egg belongs to: Ascaris lumbricoides Enterobius vermicularis c. Strongyloides stercoralis d. Trichuris trichiura A slender round worm measuring 25 cm was recovered from a toilet following a child’s trip to the bathroom. The specimen most likely is: Ascaris lumbricoides Enterobius vermicularis c. Strongyloides stercoralis d. Trichuris trichiura A 7-year-old boy’s CBC revealed a microcytic anemia with eosinophilia during an office visit for symptoms of diarrhea. The most likely parasite involved in the infection is: Enterobius vermicularis b. Necator americanus Trichuris trichiura Wuchereria bancrofti Which of the following infections is not diagnosed by finding eggs or lava in fecal specimens? Ascaris lumbricoides b. Necator spp. Trichinella spiralis d. Trichuris trichiura Which of the following parasitic diseases is a zoonosis? Ascaris lumbricoides Dracunculus medinensis Strongyloides stercoralis Leventhal: Medical Parasitology, Ed. 7                                                        Multiple Choice Questions - Chapter 2 Trichinella spiralis Cutaneous larvamigrans is caused by: a. Ascaris lumbricoides Necator americanus Strongyloides stercoralis d. Toxocara canis The nematode parasite that may complete its life cycle without leaving the host is: a. Ascaris lumbricoides Necator americanus Strongyloides stercoralis d. Toxocara canis All of the following have life cycles that require larval lung migrations EXCEPT: Ascaris lumbricoides Necator americanus Strongyloides stercoralis d. Trichuris trichiura The diagnostic form recovered in feces in Strongyloides stercoralis infections is the: a. Adult worm Egg Filariform larva Rhabditiform larva A soldier returning from Iraq noticed a blister above his ankle that subsequently opened while he was swimming in his family pool. On further examination, he noticed a worm in the open blister. The possible parasite in this lesion is: Ancylostoma duodenale Leventhal: Medical Parasitology, Ed. 7                                                        Multiple Choice Questions - Chapter 2 Dracunculus medinensis Toxocara canis Visceral larva migrans All of the following infections are diagnosed by finding microfilaria in blood EXCEPT: Wuchereria bancrofti Onchocerca volvulus c. Loa loa Brugia malayi A microfilaria recovered in a blood sample from a patient from Vietnam had two nuclei at the tip of the tail. The worm was enclosed in a sheath. This parasite is: Brugia malayi b. Loa loa Onchocerca volvulus d. Wuchereria bancrofti An immigrant from central Africa is exhibiting transient subcutaneous swelling in the arm. A blood smear revealed a sheathed microfilaria with a single row of nuclei present in the posterior of the parasite. The most likely identification is: Brugia malayi b. Loa loa Onchocerca volvulus d. Wuchereria bancrofti The diagnosis of Enterobius vermicularis infection is accomplished by observing: Eggs in feces Eggs recovered from the perianal region Larva in feces Trophozoites in feces Leventhal: Medical Parasitology, Ed. 7                                                        Multiple Choice Questions - Chapter 2 The rhabditiform larva of Strongyloides stercoralis has a: a. Long buccal cavity Sheath Large genital primordium d. Notched tail Closed fecal sanitation systems had directly led to the reduction of all the following nematode infections EXCEPT: Ascariasis Hookworm disease c. Strongyloidiasis d. Trichinosis The diagnostic form of this parasite appears as an oval thin-shelled egg with a clear area around the eight-celled immature embryo. This parasite is: Ascaris lumbricoides Enterobius vermicularis c. Hookworm Trichuris trichiura The nematode infection that is acquired by ingesting a Cyclops (water flea) is: Dracunculus medinensis Enterobius vermicularis Necator americanus Trichinella spiralis Which of the following organisms or infections could be transmitted in the laboratory? a. Ascaris lumbricoides—Ascariasis Enterobius vermicularis—pinworm infection c. Strongyloides stercoralis—Strongyloidiasis d. Trichuris trichiura—whipworm infection Leventhal: Medical Parasitology, Ed. 7                                                        Multiple Choice Questions - Chapter 2 Which of the following parasitic diseases can cause blindness? a. Brugia malayi Loa loa Onchocerca volvulus d. Wuchereria bancrofti Elephantiasis is a clinical symptom associated with: Brugia malayi Loa loa Onchocerca volvulus Strongyloides stercoralis Name the parasite shown in the following image: Ascaris lumbricoides egg Enterobius vermicularis egg Hookworm egg Trichuris trichiura egg Name the parasite shown in the following image: Leventhal: Medical Parasitology, Ed. 7  Multiple Choice Questions - Chapter 2 Ascaris lumbricoides egg Enterobius vermicularis egg Hookworm egg Trichuris trichiura egg Name the parasite shown in the following image: Ascaris lumbricoides egg Enterobius vermicularis egg Hookworm egg Trichuris trichiura egg Name the parasite shown in the following image: Ascaris lumbricoides egg Enterobius vermicularis egg Hookworm egg Trichuris trichiura egg