Chpt 10 - The Protozoans Flashcards Preview

Parasitology > Chpt 10 - The Protozoans > Flashcards

Flashcards in Chpt 10 - The Protozoans Deck (17):
1

Protozoans

Unicellular or one-cell organisms or parasites

2

Sarcomastigophorans

Flagellates and amoebae

3

Ciliophorans

Balantidium coli and Ichthyophthirius multifiliis

4

Apicomplexans

Organelles of internal movement, not visible to the naked eye

5

Flagellum

A long, whiplike or lashlike appendage

6

Trophozoite

Moving or motile form

7

Pathogenicity

Disease-causing potential

8

Pseudopodia

"False feet" of amoebae

9

Cilia

Tiny, short, moving hairs over most of the body surface

10

Locomotory organelles of apicomplexans and piroplasms

Coccidia, malarial organisms

11

Flagellates

*Protozoans possessing at least one flagellum in their trophozoite, or moving, form.*
Kingdom: Protista
Phyllum: Sarcomastigophora
Subphyllum: Mastigophora

12

Amoebae

*Protozoans that move via pseudopodia. They have two forms, the motile trophozoite form and the resistant cyst form.*
Kingdom: Protista
Phyllum: Sarcomastigophora
Subphyllum: Sarcodina

13

Name the phyla the parasitic protozoans are categorized in.

Flagellated
Ameboid
Apicomplexan
Ciliated

14

What is the most important amebic protozoan in humans?

Entamoeba histolytica

15

What protozoan parasites can have beneficial roles for their hosts?

Some ciliate protozoans (such as those in the rumen of the cow or sheep or the cecum of the horse).

16

How do apicomplexan parasites move?

They move via undulations, as they do not have visible locomotory organelles.

17

Name some of the most commonly seen apicomplexans.

Eimeria
Cystoisospora