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40 Cards in this Set
- Front
- Back
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What are the 2 phyla of Helminths?
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1. Platyhelminths (flat)
2. Nematoda (round) |
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What is the difference between Platyhelminths and Nematodas in regards to morphology?
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Platy = flat
Nema = round |
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True or false:
Helminths are animals |
True - animalia
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Are helminths mutlicellular or unicellular animals?
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Multicellular
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The life cycle of a parasitic helminth changes on what basis?
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Life cycle is modified for parasitism
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The adult stage of a parasitic helminth is found in what?
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Respective host
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The larval stage of a parasitic helminth requires what?
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Intermediate host?
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Sexual reproduction of a parasitic helminth refers to what host?
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Definitive host
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Asexual reproduction of a parasitic helminth refers to what host?
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Intermediate host
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In the disease "Lung Fluke", what is the definitive host and the intermediate host?
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Definitive host - Human
Intermediate - Snail |
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When a helminth is said to be "monoecious", what does it pertain to?
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Pertains to having BOTH male and female reproductive parts.
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When a helminth is said to be "Dioecious", what does it pertain to?
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Pertains to having either ONE of the female or male reproductive parts.
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What are symptoms of having Lung Fluke?
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Bad cough, blood in sputum, mild anemia, and weariness
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What can Lung Fluke be confused with?
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Tuberculosis or Pneumonia
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Flatworms may lack what
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Digestive system
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What are 2 class members of the phylum Platyhelminths?
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Trematodes & Cestodes
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What is another name for a Trematode?
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Flukes
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In adult Trematodes/Flukes, what is used to attack to a host tissue?
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Oral and ventral sucker
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Name a Trematode that is described in powerpoint.
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Clonorchis sinensis - Asian liver fluke
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Whats another name for a Cestode?
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Tapeworm
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A Cestode/Tapeworm consists of what 2 body parts?
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Scolex (head) & proglottids (segments of a tapeworm, containing both male and female reproductive organs)
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Cestodes/Tapeworms are monoecious or dioecious?
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Monoecious - contains both male and female reproductive organs
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Name a type of Cestode/Tapeworm according to the powerpoint.
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Echinococcus granulosus
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With beef tapeworms, who is the definitive and intermediate host?
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Definitive = Humans
Intermediate = Cattle |
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With pork tapeworms, who is the definitive and intermediate host?
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Definitive = Humans
Intermediate = Pig and also can be humans |
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With the tapeworm Echinococcus granulosus, who is the definitive and intermediate host?
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Definitive = Dogs, wolves, foxes
Intermediate = Humans |
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What phylum and class does Clonorchis sinensis belong to?
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Phylum: Platyhelminths/Flatworms
Class: Trematode/Fluke |
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What phylum and class does Echinococcus granulosus belong to?
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Phylum: Platyhelminths/Flatworms
Class: Cestode/Tapeworm |
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True or False:
Roundworms lack a digestive system |
False - Roundworms have a COMPLETE digestive system
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What is another name for a Nematode?
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Roundworm
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Which 2 Nematodes/Roundworms infect humans with their eggs?
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1. Enterobius vermicularsis aka Pinworm or threadworm
2. Ascaris lumbricoides aka ascariasis |
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The pinworm/threadworm infests what part of a human?
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Large intestines and rectum
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Ascaris lumbricoides infects what part of a human?
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Small intestines
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What are symptoms of Ascariasis?
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Restlessness, fever, and sometimes diarrhea
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Which Nematode/Roundworm infect humans with their larvae?
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Trichinella spiralis
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Trichinella spiralis causes what?
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Trichinosis "worms in your muscles"
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Ascaris lumbricoides causes what?
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Ascariasis
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How is trichinosis obtained?
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Inadequately cooked pork or bear meat
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Which Nematode/Roundworm causes Trichinosis and what are the symptoms of Trichinosis?
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Trichinella spiralis - Intestinal disorders, fever, nausea, muscular pain, edema of the face.
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What phylum does Trichinella spiralis belong to and how do they infect humans?
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Phylum: Nematode/Roundworm
Infect humans through their LARVAE |
