L 25 - CONDENSED Flashcards
How is malaria transmitted?
Female Anopheles mosquito
True or False: Malaria is caused by obligate, intracellular protozoan parasites
True
P. vivax only infects which cell type?
A. RBC
B. Reticulocytes
C. RBC of all ages
B. Reticulocytes (immature RBC’s)
Schuffner’s Dots are associated with:
A. P. ovale
B. P. malariae
C. P. vivax
D. P. falciparum
C. P. vivax
____ is a benign tertian malaria where as ___ is a malignant tertian malaria
A. P. vivax; P. falciparum
B. P. falciparum; P. vivax
C. P. vivax; P. ovale
P. vivax; P. falciparum
True or False: P. falciparum is the most severe form of malaria because it infects RBC OF ALL AGES
True
- Thankfully, there’s a vaccine available
True or False: Ovale malaria causes a fever ever 3rd day, but milder than P. vivax. It is the least common of all species
True
Schuffner dots, gametocytes and infect red cells, with fibrated edges suggest…
A. P. ovale
B. P. vivx
C. P. falciparum
A. P. ovale
Band-shaped trophozoites suggest…
A. P. ovale
B. P. vivx
C. P. falciparum
D. P. malariae
D. P. malariae
True or False: P. vivax (benign) and P. ovale (milder) can lead to relapse – P. falciparum and P. malarie (quartan) do not lead to relapse
True
Which is the most mild form of malaria?
A. P. vivax
B. P. falciparum
C. P. malariae
D. P. ovale
D. P. ovale
Which phase of the malaria life cycle occurs in the definitive host (mosquito)? Which phase occurs in humans (intermediate host?
Sexual phase (sporogony)
- mosquito (definitive host)
Asexual phase
(schizogony)
- human (intermediate host)
In sporogony phase of malaria, ingestion of ____ by mosquito occurs and ____ are produced
A. gametocytes; sporozoites
B. sporozoites; gametocytes
A. gametocytes; sporozoites
During which phase of malaria are schizonts made, which release merozoites?
A. Schizogony (asexual)
B. Sporogony (sexual)
A. Schizogony (asexual)
Sporozoites migrate through bloodstream to liver, where they form ____
Infected hepatocytes rupture and release _____, which invade RBC
The merozoite becomes a ____ (ring form) in RBC
merozoites
trophozoite
True or False: During the malaria life cycle, hypnozoites remain in liver
True
True or False: During the malaria life cycle, in the RBC, the trophozoite multiplies, producing new merozoite (differentiates into erythrocytic schizont with merozoites(
True
_____: Infective form for humans, found in salivary gland of female anopheline mosquito. Quickly homes into liver to become hepatic SCHIZONT
A. Schizont
B. Sporozoite
C. Hypnozoite
D. Trophozoite
B. Sporozoite