1. by: Emily Pritchard, Asha Gopal, Keyana Pearman
The Immune System
by: Emily Pritchard, Asha Gopal, Keyana Pearman

2. The Immune System: Function
Consists of cells that help get rid of invading bacteria and viruses
The lymphatic system, as a major part of the immune system, transports a fluid containing infection-fighting white blood cells throughout the body
Recognizes and attacks foreign substances in the body

3. Types of White Blood Cells
Macrophage (destroyer): destroys pathogens by engulfing them and digesting them
Helper T-cells(activator): activates other T-cells which then become Killer T-cells. They also activate B-cells
Killer T-cells(attacker): attack infected body cells by attaching to specific antigens
B-cells(responder): make antibodies that attach to specific antigens

4. Organs
The primary lymphoid organs in the immune system are the thymus, bone marrow, lymphatic tissues such as spleen, tonsils, lymph vessels, lymph nodes, adenoids, and skin

5. How Do The Systems Work Together
The integumentary system is compromised of all skin cells in the body. The immune system works with the integumentary system to keep foreign pathogens out of the body
The immune system works with the circulatory system to transport antibodies and pathogens to lymph nodes, where the pathogens are tagged for destruction

6. Maintaining Homeostasis
The immune system maintains homeostasis by preventing pathogens from disrupting the body’s normal functioning
For example lung disease caused by bacteria can weaken the lungs affecting oxygen levels in the whole body

7. How Does Your Body Build Immunity?
Once your body gets an illness from a virus or bacteria, it makes antibodies to fight that pathogen off. The next time you get the same illness the antibodies will recognize it and destroy it quicker. You have then built up an immunity against this bacteria or virus

8. Prescribing Medicine?
Many times doctors will not prescribe medicine because your body will build up immunity on its own
Antibiotics cannot kill viral infections
Giving antibiotics too frequently can result in drug-resistant bacteria, making it harder to kill

9. You Should Always Wait And See
You should wait and see if your body can fight off an infection first, because giving antibiotics too frequently can result in drug-resistant bacteria, making them harder to kill
It is better to fight it off on your own because you will build up immunity against that illness

10. Vocabulary
Immune System: Made up of tissues and white blood cells that recognize and attack foreign substances in the body
Immunity: The ability to resist or recover from an infectious disease
Pathogen: A bacteria, virus, or other microorganism that causes disease
Antibody: A protein that binds to a specific antigen to tag it for destruction
Circulatory System: An organ system that sends blood throughout your body
Integumentary System: The protective covering of your body including skin, hair, and nails. The skin acts as a barrier that protects the body from infection

11. What is the function of the Immune System ?
Question #1
Helps circulate blood throughout the body
Breaks down food in the body
Recognize and attack foreign pathogens
What is the function of the Immune System ?

12. What happens if you take medication too frequently ?
Question #2
What happens if you take medication too frequently ?
A) the virus goes away and never comes back
B) nothing will change
C) the bacteria can become drug resistant

13. Macrophages make antibodies that attach to antigens
Question #3
True or False
Macrophages make antibodies that attach to antigens
A) true
B) false

14. The brain is part of the Immune System
Question #4
True or False
The brain is part of the Immune System
True
False

15. Question #5 A) engulfs the virus B) makes antibodies
What does a helper T-cell do?
A) engulfs the virus
B) makes antibodies
C) activates other T-cells