Download Medical Parasitology

Medical Parasitology
Classification of Parasites
• Parasites are Eukaryotes
Classification of Parasites
• According to their anatomical habitat in
human, they are classified into also 2 groups:
• 1. Ectoparasites ( Parasitizing the skin surface).
• 2. Endoparasites (Parasitizing the internal
tissues)
Classification of Parasites
• According to their cellular structure:
are classified into 2 groups:1. Protozoa (Each one is unicellular=composed of
one cell).
2. Metazoa (Multicellular= Each one is composed
of many cells).
NB:
Protozoa = Plural, Protozoan= Singular
Metazoa = Plural, Metazoan= Singular
Protozoa:
• According to the body systems they are mainly
classified into:
1. Haemopoietic parasites.
2. Intestinal parasites.
3. Genitourinary parasites.
4. Cutaneous parasites.
5. Others.
Classification of Protozoa
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Haemopoietic parasites:
1. Plasmodium species.
2. Leishmania species.
3. Trypanosoma species.
4. Toxoplasma species.
Classification of Protozoa
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Intestinal parasites:
1. Entamoeba histolytica.
2. Blantidium coli.
3. Giardia lamblia.
4. Cryptosporidium parvum.
5. Isospora belli.
Classification of Protozoa
• Genitourinary parasites:
• Trichomonas vaginalis.
Classification of Helminthes
• 1. Cestodes
Cestodes (tapeworms)
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1. Taenia saginata and Taenia solium.
2. Hymenolepis nana.
3. Diphyllobothrium latum.
4. Dipylidium caninum.
5. Echinococcus granulosus.
6. Echinococcus multilocularis.
Cestodes
Nematodes (round worms)
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Intestinal Nematodes
Ascaris lumbricoides
Hookworms
Enterobius vermicularis
Trichuris trichiura
Ascaris lumbricoides (adult)
Nematodes (round worms)
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Tissue Nematodes
Wuchereria bancrofti
Brugia malayi
Brugia timori
Loa loa
Onchocerca volvulus
Dracunculus medinensis
Trchinella spiralis
Trematodes (flukes)
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Schistosoma mansoni
Schistosoma haematobium
Schistosoma japonicum
Hermaphroditic flukes
Adult Schistosoma
(male and Female)
Fasciolopsis buski
• Adult worm
How to write the name of a parasite?
• The name of the parasite is written including
the genus and the species.
( e.g Plasmodium falciparum).
• The first letter in the genus name is written as
capital while the first letter in the species name
is written as small letter.
• (Plasmodium falciparum).
How to write the name of
a parasite?
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Both names of the genus and the species are
either underlined or written in italic.
• Toxoplasma gondii = underlined.
or:
Toxoplasma gondii= italic