Flashcards in The Immune System Deck (12)
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1
The immune system
Guards the body against possible infections
2
Mon-specific défenses
Things that can guard against many types of threats.
Eg. Skin, mucous membranes, phagocytic cells (swallow bacteria and virus)
3
Pathogen
Disease causing agent
4
Specific défense
Deals with 1 type of threat.
Immune system sends weapons specifically for that antigen.
5
Antigen
Protein, or some surface feature that the immune system learns to recognize as being foreign.
6
Eg of specific défenses
Killer T lymphocytes
B Lymphocytes
Helper T lymphocytes
7
Killer T lymphocytes
Recognizes a certain type of foreign cell or cancer cell.
They kill by bursting their targets.
8
B lymphocytes (plasma cells)
Make antibodies specific to 1 type of antigen. Antibody proteins fits a certain antigen like a lock and key. This prevents it from entering host cell.
9
Help T lymphocytes
Controls immune system by sending out chemical signals.
10
Types of vaccinations
Passive immunity
Active immunity
11
Passive immunity
Giving the patient pre-formed antibodies gives them immediate protection, but the protection is short-lived
12
