Flashcards › Parasitology Blood and Tissue Nematodes

Trichinella Spiralis common name Trichina Dracunculus medinensis common name Guinea worm or Fiery serpent Trichinella spiraies infection name Trichinella infection Dracunculus medinensis infection name Guinea worm disease Trichinella Spiralis infective form Trichinella lavae Dracunculus medinensis infection form Thubditiform Trichinella spiralis mode of transmission Ingestion of poorly cooked meat Dracunculus medinensis mode of transmission Ingestion of contaminated water Trichinella spiralis vector By eating pork, bear, horse, or walrus Dracunculus medinensis vector By eating copepods Trichinella spiralis diagnostic form Examine muscle biopsy specimens Dracunculus medinensis diagnostic form Examine blester on pateints lower extrimities Trichinella spiralis sample submitted Tissue Microfilariae The larval stage of the filarial parasite Copepod Tiny crustacean, also known as water fleas, that act as the intermediate host for dracunculus Elephantiasis Lymphedema of the subcutaneous tissues, with hardening and thickening of the skin, brought about by the presence of filaria which obstruct the lymphatic vessels Calabar swellings A transient swelling of subcutaneous tissues seen in infections with the filarial nematode Loa Loa Parthenogenic Self fertilizing How do you distinguish hookworm larva from strongyloides larva Strongyloides larva is distingushed by short buccal cavity and a prominent genital promordium. The hookworm has a long buccal cavity and a small henital promordium How do you distinguish fertilized from unfertilized Ascaris eggs Fertilized eggs are round and unfertilized eggs are elongated or oval What parasitic infections are commonly seen to together Ascaris and Trichuris trichitrua can be seen together Wuchereria bancrofti common name Elephantiasis Brugia malayi common name Filariasis or Elephantiasis Loa loa common name African eye worm Onchocerca volvulus common name River blindness Wuchereria bancrofti and Brugia malayi infection name Bancrofti infection Loa loa infection name Loiasis Whchereria bancrofti and Brugia malayi mode of transmission Injection by mosquitoes Loa loa and Onchocerca volvulus mode of transmission Larvae enters bite site Wuchereria bancrofti vector Flies and mosquitoses Brugia malayi vector Mosquito Loa loa vector Mango or deer fly Onchocerca volvulus vector Female black fly Wuchereria bancrofti diagnostic form Microfilaria in thick blood smear Brugia malayi diagnostic form Microfilaria in blood and lymphatic aspirate smears Loa loa diagnostic form Microfilaria in blood smear Onchocerca volvulus diagnostic form Microfilaria in skin biopsy Wuchereria bancrofti and Loa loa sample submitted Blood Brugia malayi sample submitted Blood and lyphatic fluid Onchocerca volvulus sample submitted Tissue Onchocerca volvulus sheath Does not have a sheath Wuchereria bancrofti tail nuclei appearance Nuclei does not extend to the tip of the slightly pointed tail Brugia malayi tail nuclei appearance Separated nuclei extends to the tip of the tail Loa loa tail nuclei appearance Continuous nuclei at the tip of the tail Onchcerca volvulus tail nuclei appearance Nuclei doesn't extend to tip of tail Parasitology Blood and Tissue Nematodes