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MBI 143. Worksheet #2 parasites

Across
Name that applies to a helminth that consists of a ribbonlike, segmented body; common name is tapeworm.
Synonym for a 'dead-end host' or an intermediate host in which subsequent transmission to the definitive host does not occur.
Plural of louse.
Roundworms.
The dorsal (back) surface's shield of hard tick. This structure covers male tick's entire dorsal surface, but only part of the dorsal surface of female ticks.
Parasites, such as a proglottid of an adult tapeworm segment that contains both male and female reproductive organs, capable of self-fertilization.
Dermacentor is a genus containing ______.
Phylum of invertebrate animals with, for example, a segmented body, jointed appendages, and usually a chitinous exoskeleton.
This insect is an ectoparasite and is flattened dorso-ventrally.
An individual segment of a tapeworm.
________ caused by Ascaris lumbricoides is a soil-transmitted helminth (STH), infecting approx. 1.2 billion people globally.
Insects have ______ legs.
Flatworms, including trematodes (flukes) and nematodes (roundworms) are called _________helminths.
Dipylidium is a genus containing ________.
These ectoparasites are vectors for the etiologic agent of Rocky Mountain Spotted fever, tularemia ('rabbit fever') and Lyme disease.
The anterior end of a tapeworm.
Fasciola hepatica is a trematode, commonly known as a ________.
Down
Pediculus is a genus containing _____.
A louse's egg.
Fleas have four stages in their life cycle: egg, larva, pupa and ______.
The study of parasites.
Synonym = primary. The host in which the adult and/or sexual phase of a parasite occurs.
Ectoparasites live on the outside of a host, where they ______ the skin, hair/fur/feathers.
Ticks have _______ legs.
Developmental stage of certain arthropods that morphologically resembles the adult.
An ________ parasite is unable to survive outside of its host.
Ascariasis is caused by ingesting _____ of Ascaris lumbricoides.
Ascaris is a genus containing ________.
General term for the entire length of proglottids in a tapeworm.
Dirofilaria is a genus containing ________
Humans are the primary host for the flea that belongs to the genus ______.
This insect is an ectoparasite and is laterally flattened.
The most prevalent vector-borne disease in world is ______ malaria.
An _____parasite lives inside, e.g., in the host's internal organs or tissues, its host.
The most prevalent vector-borne disease in the U.S. is ______ disease.