Define Resistance
the ability to ward of disease
Define susceptibility
lack of resistance
Specific resistance includes
T lymphocytes and B lymphocytes
The spleen and the lymph nodes play the biggest role in what?
Your body’s defense system
What is your body’s first line of defense?
skin
What is the lacrimal apparatus?
a group of structures that protect the eye by making and draining away tears
Cilia protects what?
your lungs
What are chemical factors that are part of your first line of defense?
sebum, sweat glands, gastric juices
A microorganism must pass what to get into your circulatory system?
lymph nodes
Sweat glands produce perspiration that contains what?
lysozymes
What is the 2 most important WBC’s? Their functions?
Neutrophils; phagocytosis
Monocytes (macrophages); phagocytosis and antigen presentation
What is the function of basophils?
makes heparin and histamine (allergy)
What is the function of eosinophils?
phagocytosis, toxic proteins against parasites
What is the function of Lymphocytosis?
B and T Cells and immunity
What is the function of thrombocytes?
blood clotting
What is the most predominant entry way for microorganisms?
respiratory tract
*What are the 5 steps of phagocytosis?
- Chemotaxis
- Adherence
- Ingestion
- Digestion
- Discharge
What happens in vasodilation?
redness releases histamine which causes swelling
What are the 3 pathways of the complement system?
- Classical Pathways
- Alternate Pathways
- Complement activation
What do the 3 pathways accomplish?
Inflammation, phagocytosis, cytolysis
By what 2 proteins is inflammation accomplished?
C3a and C5a
C5-C9=_________
Hydrolysis
What is the explanation for Interferon?
RNA virus causes interferon to be made, then interferon goes to enter and warn healthy cells, causing cells to produce antiviral proteins.
What are interferons? What do they do?
They are proteins produced by a host cell when there is an RNA virus. They then enter and warn healthy cells causing them to produce antiviral proteins.