first lecture-general pro to zoology
TRANSCRIPT
20081 Dr.Faiza Habib
2008Dr.Faiza Habib2
MARKS: 140 MARKS FINAL EXAM. 20 Practical FINAL EXAM 20 PRACTICAL WORK AND ACTIVITY 20 MID-YEAR EXAM (7th week) ----------- 200 MARKS TOTALBOOKS: THREE BOOKS (in one pack) 1- lectures book. 2- Practical and activity book. 3- Questions book
20083 Dr.Faiza Habib
20084 Dr.Faiza Habib
PARASITE
An organism that:
1 - Lives in or on and -Takes its nourishment from another organism.
-Causes him harm.
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PARASITE
in Greek PARA = along sides of SITOS = food
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DEFINITIVE HOST
It is the host which harbors the adult
stage of the parasite or its sexually
reproducing forms.20089 Dr.Faiza Habib
INTERMEDIATE HOST
It is the host which harbors the larval e
host stage of the parasite or its
asexually reproducing forms.
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RESERVOIR HOST
It is the ANIMAL which harbors the same species and stages as humans. 200811 Dr.Faiza Habib
VECTOR
It is an arthropod that transmits parasites
from one host to another. 200812 Dr.Faiza Habib
OBLIGATORY PARASITE
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FACULTATIVE PARASITE
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PERMANENT PARASITE
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TEMPORARY PARASITE
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ECTO -PARASITE
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ENDO -PARASITE
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ACCIDENTAL PARASITE
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OPPURTINISTIC PARASITE
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PARASITIC DISEASES
=
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1- Locate areas in the world where infection by the parasite exists (Geographical distribution)2- Describe the morphology of the different stages.3- Name the definitive, intermediate hosts and reservoir hosts if present.4- Know the habitat i.e.where does it live inside the host.5- Describe its life cycle.6- Understand the pathogenesis and pathology.7- Predict the clinical manifestations of its infection.8- Apply proper method/s of diagnosis.9- Prescribe the proper treatment9- Take parts in prevention and control.
Aims and objectives of studying MEDICAL PARASITOLOGY:
Things that must be known about each parasite, i.e.
By the end of this course you must:
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One-celled Organism
in Greek proto = first zoa = animals
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EUKARYOTIC ORGANISM
CAPABLE OF PERFORMING ALL VITAL FUNCTIONS OF METAZOAN ORGANISMS
DESCRIPTION
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NUCLEUS
CYTOPLASM
STRUCTURE
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NUCLEUS
STRUCTURE
Reticular network
Nuclear sap
May Be:• One or More
• Compact or Vesicular
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CYTOPLASM
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PHYSIOLOGY OF PROTOZOA
Diffusion through body surface
Active contribution of pseudopodia, falgella and cilia
Giardia
Entamoeba
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PHYSIOLOGY OF PROTOZOA
Digestive enzymes
Toxins
Antigens
…….etc.
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PHYSIOLOGY OF PROTOZOA
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PHYSIOLOGY OF PROTOZOATo overcome unfavorable conditions outside the host.
To protect the organisms during passage in the GITWhen conditions become favorable ex-cystation takes place.
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PHYSIOLOGY OF PROTOZOA
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PHYSIOLOGY OF PROTOZOA
i.e.Exchange of nuclear matter
i.e. fusion of male and female gametocytes to form zygote
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PHYSIOLOGY OF PROTOZOA
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PHYSIOLOGY OF PROTOZOA
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PHYSIOLOGY OF PROTOZOA
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PHYSIOLOGY OF PROTOZOA
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PHYSIOLOGY OF PROTOZOA
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2008 - 2009200841 Dr.Faiza Habib