Immune System
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Lymph Tissue
“marketplace” of lymphocytes within the lymph system
Spleen
“marketplace” of lymphocytes within the circulatory system
What does DNA make?
Protein
Thymus
site of maturational processing of T lymphocytes (from stem cells of bone marrow)
The “Adversary”
any chemical, substance, organism, etc. that disrupts homeostasis and/or deters nor normal bodily functions
noxious agents
“dirt” , toxic wastes, chemicals, poisons, pollen, etc.
pathogens
disease causing organisms, e.g., bacteria, virus, fungus, protozoa
parasites
tape worm, protozoa (giardia), virus
Bacteria
Prokaryotes, single celled organism which have no intracellular organelles, no nucleus but do have a cell wall
Can you have too much bacteria?
Yes, too much can cause diseases.
What is responsible for infectious diseases?
Bacteria
streptococcus
strep throat, pneumonia, etc.
staphylococcus
skin infection, toxic shock syndrome, syphilis
penicillin
inhibits the development of the cell wall of bacteria
What can become resistant to antibiotics?
Bacteria
Virus
Very small microorganism, small package of DNA or RNA encased in a protein capsule.
How do viruses work?
Use our cells to make more of themselves by copying their RNA/DNA
Parasitic microbe
a virus infiltrates mammalian cells and uses the cellular organelles to perpetuate itself. Deprives the cell of its normal function.
Fungi
single celled or multicellular organisms. molds, yeasts, mushrooms, etc.
Protozoa
single celled animals that live in very moist environments
Leukocytes (White Blood Cells)
include all of the different types of WBC
Histamine
Released during an allergic reaction. Runny nose, itchy eyes, etc.
Eosinophil
make chemicals that destroy parasitic worms
Neutrophil
a mobile Phagocytic specialist whose mission is one of the “search and destroy” (make up the majority of WBC, 60-70%)