Lines of Defense
Which line of defence is specific and learned?
Third Line of Defence
These cells target and eliminate body cells infected by pathogens to prevent further infection.
Killer T Cells
What are harmless versions of a pathogen that we can inject into our body to trigger an immune response called?
Vaccines
Type of immunity that is present from birth and acts the same against all pathogens.
Innate Immunity
These cells produce antibodies that lock onto pathogens
B Cells
What type of disease occurs when the immune system attacks your own body's healthy cells?
Autoimmune disease
This line of defence is innate and becomes active after pathogens have entered the body, using cells like macrophages and killer T cells.
Second Line of Defence
These cells release signals that activate other immune cells
Helper T Cells
What is it called when most people in a community are vaccinated?
(Hint: _______ Immunity)
Herd Immunity
A child with unusually thin skin but normal internal immune cell response is most likely experiencing difficulties with their _____ line of defense.
First Line of Defence
Which cells tell the immune system to slow down to avoid harming healthy tissue?
Suppressor T Cells
Which type of vaccine uses only one specific part of the pathogen rather than the entire organism?
Subunit Vaccine
After vaccination, exposure to the influenza virus triggers a rapid immune response that prevents illness, indicating the involvement of the ____ line of defense.
Third Line of Defence
Which immune cell engulfs and digests pathogens?
Macrophages/White Blood Cells
A 17-year-old student experiences their immune system attacking their own pancreatic cells.
Which autoimmune disease does the student most likely have?
Type 1 diabetes