Parasitology Quiz and lesson PDF

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Parasitology Quiz and lesson by Fjr...

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Parasitology Quiz ________ is the study of parasites, which typically focuses on ________ (protozoans that invade and live in organisms). _______ (Flatworms, Thorny, Roundworms(nematodes), basically worm) and ______ (Crabs, lobsters, shrimp, barnacles, and a variety of other species are members of the phylum arthropods.)

Answers: Process with characteristic symptoms, emerged, determining a means of healing infected patient become a priority Parasitology Protozoa Helminths Arthropods

Human parasitology is focused on: ___, ____, ____

morphology, life cycle, and host environment relationship

Purpose of parasite: ___________ Analogy:

to obtain nutrients from another organism

Infection: Invasion ______

Invasion in the body

Infestation: Invasion ______

Invasion on the body

Most parasitic infections are found in:

Underdeveloped tropical countries and Subtropical countries (Haiti, Guatemala, Myanmar & African continent)

Increased prevalence of _____ causes infection of parasites to spread in different areas.

Nematodes Any worm of the phylum Nematoda, also known as a roundworm. Nematodes are among the most numerous organisms on the planet. Nematodes are elongate, bilaterally symmetrical, and frequently tapered at both ends. Some animals have a fluid-filled bodily cavity between the digestive tract and the body wall called a pseudocoel.

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1. cannot survive outside of a host 2. capable of existing independently 3. established inside of a host 4. established in or on the exterior surface 5. harboring a parasite 6. adult sexual phase of parasite 7. larval asexual phase of parasite 8. parasitic for humans and from which humans may become infected 9. Host responsible for transferring a parasite 10. host that is not exhibiting any clinical symptoms 11. beneficial to one and neutral to the other 12. beneficial to both 13. beneficial to one at the other’s expense 14. one benefits and has a neutral effect on the other 15. has demonstrated the ability to cause disease

a. b. c. d.

CHOICES Obligatory parasite Facultative parasite Endoparasite Ectoparasite

e. Accidental or incidental host f. Definitive host g. Intermediate host h. Reservoir host i. Transport host j. Carrier k. Symbiosis l. Commensalism m.Mutualism n. Parasitism o. Commensal p. Pathogenic

(Terms and definition used are from Clinical Parasitology by Zeibig) The order of the terms in the numbered questions corresponds to the order of the right answers.

Terminologies: A zoonosis/ zoonotic is an infectious disease that spreads from animals to humans (or from humans to animals). Erratic parasite - a parasite that enters an organ where it is not normally present. Incidental- A parasite living on a host other than its normal host. Permanent those found within the host from early life to maturity Transitory- lasts only for a short time. adult is free living Periodic- temporary parasite one that lives free of its host during part of its life cycle. host different from that of adult. Trematoda is a subphylum of the Platyhelminthes. It contains two types of parasitic flatworms known as flukes. They are mollusk and vertebrate internal parasites. Most trematodes have a complicated life cycle that involves at least two hosts. The major host, where the flukes reproduce sexually, is a vertebrate....