Download Human Immune system Student note sheet 1. Immunity The ability of

Human Immune system
Student note sheet
1. Immunity

The ability of the body to fight _______________ and/or
foreign invaders by producing _______________ or killing
infected cells.
2. Immune System

The system in the body responsible for maintaining
__________________ by recognizing ________________from non harmful organisms
and produces an appropriate response.
Foreign Invaders:
1. Called ______________________

Viruses, bacteria or other living thing that causes disease/immune response.
2. _____________________

_______________ that pathogens produce that cause harm to an organism.
Parts of the Immune System
1.
2.
3.
4.
_____________ - White Blood Cells in particular.
_________________________________________________
_______________________________ – Produces T Lymphocytes
_______________________________ – Produces B Lymphocytes
How does the body fight infection/foreign invaders?
The Body’s THREE lines of Defense:
First Line of Defense – ________________________________________
Provides Physical and Chemical barriers
Physical – hard to ________________, made of indigestible keratin
Chemical – _____________________________
Second Line of Defense – ________________________________________________
These are defenses the body uses no matter what the invader may be. These defenses include:




__________________ – done by Macrophages – cells that eat pathogens
__________________________________________________________
____________________ - red, swollen skin
_______________ – The fever (high temp) kills invaders
Third Line of Defense – ________________________________________________
This is a _____________ response to a specific pathogen/antigen.
The response involves the creation of ____________________________
Antibodies:
____________ -shaped protein molecule.
Produced by __________________________
Function: Recognize antigens, bind to and _______________________ them.
Primary .vs. Secondary Immune Response
1. Primary Immune Response
This is a response to an invader the ___________ time the invader infects the body.
No measurable immune response for first few days.
Next 10 – 15 days antibody production grows steadily
2. Secondary Immune Response
A more ________ (quicker) response to an invader the ________ time it invades the body.
Antibody production ______________ dramatically and in a much ______________ time
period.
Passive .vs. Active Immunity
1. Active Immunity
This is immunity where the body is “____________” producing ____________ to fight
infection.
Ex: You have a throat infection and you are actively creating antibodies to fight it.
___________________: An injection of a weakened strain (or dead) of an infectious
microbe (pathogen) that causes the body to undergo active immunity (produce
antibodies).
2. Passive Immunity
This is immunity where antibodies are given to a person from the blood of another
____________ or animal.
This immunity only lasts for a ____________ period of time.
ex: _______________ mothers pass antibodies to their children through the milk.
Autoimmune Disease:
1. __________________ diseases are diseases where the ________________ system begins to
attack itself.
Ex:
Rheumatoid Arthritis – crippling disease of the _______________.
Lupus – disease of ______________ and organs.
Multiple Sclerosis – disease of _________________system
2. Cause(s): _________________________________________________________________
3. Cures/Treatments: ___________________________________________________________
Allergies:
Allergy:
- An ____________________ response by the immune system to an allergen.
- Allergen: a normally __________________ substance that causes an allergic reaction.
ex: _________________________________________________________________
Types of Allergic reactions:
There are two types of allergic reactions.
a. ____________________– occurs within seconds and normally lasts for about 30 mins.
b. ___________________ – takes longer to react and can last for a much longer time.