[Elizabeth_Zeibig]_Clinical_Parasitology__A_Practi(z-lib.org)

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CHAPTER 6 Select Sporozoa: Plasmodium and Babesia
It is also important to note that processing and
studying multiple sets of smears are generally
required to rule out the presence of a malarial
infection. A composite drawing of the six morphologic
forms of each of the four Plasmodium
spp.—P. vivax, P. ovale, P. malariae, and P. falciparum—are
provided at the end of the chapter
as a comparative reference.
TEST YOUR KNOWLEDGE!
6-1. The infective stage of the Plasmodium
parasite and the Babesia parasite for
humans is the: (Objective 6-6)
A. Merozoite
B. Trophozoite
C. Gametocyte
D. Sporozoite
6-2. What is the name of the dormant parasite
form found in patients with Plasmodium
ovale and Plasmodium vivax infections?
(Objective 6-1)
A. Trophozoites
B. Sporozoites
C. Hypnozoites
D. Gametocytes
6-3. The species of mosquito most commonly
known to serve as a vector for the genus
Plasmodium is: (Objective 6-6)
A. Ixodes
B. Anopheles
C. Culex
D. Glossina
6-4. Which of the following is a self-limiting
infection characterized by a gradual onset
of headache, chills, sweating, and fatigue
that demonstrates no periodicity? (Objective
6-8)
A. Ehrlichia phagocytophila
B. Babesia microti
C. Plasmodium vivax
D. Plasmodium ovale
6-5. Giemsa-stained blood smears demonstrate
normal-sized red blood cells containing
ring form trophozoites in pairs and tetrads,
without pigment or stippling. Which parasite
listed best fits this description? (Objective
6-12C)
A. Babesia divergens
B. Plasmodium falciparum
C. Plasmodium vivax
D. Plasmodium malariae
6-6. Sexual reproduction of Babesia species
takes place in the: (Objective 6-6)
A. Human gut
B. Red blood cells
C. Tick
D. Parenchymal cells of the liver
6-7. Which species of Plasmodium is characterized
by a rosette arrangement of merozoites
and the presence of Schüffner’s dots in
the red blood cells? (Objective 6-12C)
A. Plasmodium vivax
B. Plasmodium ovale
C. Plasmodium falciparum
D. Plasmodium malariae
6-8. Babesia spp. undergo an exoerythrocytic
cycle. (Objective 6-6)
A. True
B. False
6-9. Ziemann’s dots, band form trophozoites,
and 72-hour periodicity of paroxysms is
indicative of infection with which Plasmodium
species? (Objective 6-8)
A. Plasmodium vivax
B. Plasmodium ovale
C. Plasmodium falciparum
D. Plasmodium malariae
6-10. Which of the following would be an
advised drug therapy for an uncomplicated
case of babesiosis? (Objective 6-9A)
A. Clindamycin-quinine
B. Atovaquone-proguanil
C. Penicillin-aspirin
D. Erythromycin-chloroquine