Transcript IMMUNE SYSTEM

IMMUNE SYSTEM
What does it do? – Fights disease
NONSPECIFIC RESPONSE
Nonspecific Defense– attempts to get rid of
all infections
Physical barriers –
A. skin
B. mucous
C. sweat, saliva, tears
NONSPECIFIC RESPONSE
Cells – Macrophages (WBC’s) eat viruses and
bacteria; phagocytosis
Inflammatory Response – body temperature
rises
SPECIFIC RESPONSE
Specific Defense –
Attempts to get rid
of individual types of
infections
SPECIFIC RESPONSE
VIDEO SUMMARY OF SPECIFIC RESPONSE
use “Interaction of Antigen Presenting Cells and T-helper Cells”
then “Cytotoxic T-cell Activity Against Target Cells (441.0K)”
VIDEO SUMMARY OF SPECIFIC RESPONSE
use “Interaction of Antigen Presenting Cells and T-helper Cells”
then “Cytotoxic T-cell Activity Against Target Cells (441.0K)”
SPECIFIC RESPONSE
Step one – Dendritic cells display virus parts
to immunity cells; looking for a correct
match
Step two – Correct T-cell is found
Step three – T-cells reproduce and kill
infected cells
SPECIFIC RESPONSE
Step four – B-cells reproduce and make
antibodies
Step five – Antibodies coat virus (cannot
infect)
Step six – Some B-cells become memory cells
Memory Cells
VACCINES
When you get a shot, you are getting:
A.Antibodies?
B. Full strength virus?
C. “Weakened” virus?
VACCINES
How do vaccines work? Body is given a small
amount of “weakened” virus/bacteria and
memory cells are produced.
Edward Jenner; Coxpox; “vaca”
IMMUNE SYSTEM
DISORDERS
Autoimmune diseases – Immune system is
attacking you!
Arthritis – attacks tendons in joints
Juvenile Diabetes – attacks pancreas
IMMUNE SYSTEM
DISORDERS
AIDS – HIV infects and destroys T-cells;
immune system does not work
Usually die from “simple” diseases like
pneumonia
Immune System Summary
and how Influenza Vaccine
is produced

video
IMMUNE SYSTEM
DISORDERS
Allergies – Immune system is proteins from
environment (bee venom, dust, pollen)
Blood pressure drops very quickly
Injection of epinephrine