1. Umm Al-Qura University
بسم الله الرحمن الرحيم
Umm Al-Qura University
Health Sciences College at Al-Leith
Department of Public Health
Lecture (2)

2. objectives
1/ Define protozoology. 2/ Explain protozoan classification.

3. Protozoa Classification
Primary unicellular often also called protists
Many important human and veterinary pathogens

4. Parasites Protozoa Endo-
Helminthes parasite
Arthropoda Ecto-

5. Protozoology
is the science which deals with members of the phylum Protozoa. There are many thousands of species of protozoa, of which most are microscopic.

6. The phylum Protozoa, divided into four subphylum, each further subdivided into classes. Four of these classes contain important parasites of man, and these are:
Phylum Protozoa
Subphylum
1- Sarcomastigophora Sporozoa Ciliophora Cnidospora
Classes Rhizopodea Telosporea Ciliatea not include parasites
Zoomastigophorea

7. 1- CLASS RHIZOPODA
The parasites of this class move by means of psedopodia and multiply by binary fission. The only parasite of this class which is pathogenic to man is Entamoeba histolytica.

8. 2- CLASS ZOOMASTIGOPHORA
The parasites of this class move by means of flagellum or more than one flagellum, and multiply by longitudinal division of the body into two. Several of them are important pathogenic parasites of man for example:
1- Giardia lamblia.
2- Trichomonas spp.
3- Trypanosoma spp.
Giardia lamblia

9. 1- Giardia lamblia

12. 2- Trichomonas spp

15. 3- Trypanosoma spp

18. 3- Class Telosporea
The parasites of this class have no motor organelles such as cilia or flagella, for example:
Malaria parasites.

19. 4- CLASS CILIATA
The parasites of this class move by mean of cilia, and only one species, Balantidium coli, is pathogenic to man.

21. Thanks
Radia 21