[Elizabeth_Zeibig]_Clinical_Parasitology__A_Practi(z-lib.org)

C H A P T E R
8
The Nematodes
Elizabeth Zeibig
W H A T ’ S A H E A D
Focusing In
Morphology and Life Cycle
Notes
Laboratory Diagnosis
Pathogenesis and Clinical
Symptoms
Nematode Classification
Enterobius vermicularis
Trichuris trichiura
Ascaris lumbricoides
Hookworms
Necator americanus
Ancylostoma duodenale
Strongyloides stercoralis
Trichinella spiralis
Dracunculus medinensis
Looking Back
L E A R N I N G O B J E C T I V E S
On completion of this chapter and review of
its figures and corresponding photomicrographs,
the successful learner will be able to:
8-1. Define the following key terms:
Autoreinfection
Buccal capsule
Buccal cavity
Chitin
Copepod (pl., copepods)
Copulation
Copulatory bursa
Corticated
Cuticle
Decorticated
Egg
Embryonated
Filariform larva (pl., larvae)
Genital primordium
Gravid
Helminth (pl., helminthes or helminthes)
Larva (pl., larvae)
Nematode (Nematoda)
Parthenogenic
Retroinfection
Rhabditiform larva (pl., larvae)
Unembryonated
Zoonosis
8-2. State the geographic distribution of the
nematodes.
8-3. State the common name associated with
each of the nematodes.
8-4. Given a list of parasites, select those
belonging to the class Nematoda.
8-5. Classify each nematode as intestinal or
extraintestinal.
8-6. Briefly summarize the life cycle of each of
the nematodes.
8-7. Identify and describe the populations prone
to contracting symptoms and clinically
significant disease processes associated with
each nematode.
8-8. Identify and describe each of the
following as they relate to the
nematodes:
A. Disease or condition, prognosis
B. Treatment options
C. Prevention and control measures
8-9. Select the specimen of choice, collection
and processing protocol, and laboratory
diagnostic technique for the recovery of
each of the nematodes.
8-10. Given a description, photomicrograph, and/
or diagram of a nematode, correctly do the
following:
188 Copyright © 2013 by Saunders, an imprint of Elsevier Inc.