Lines of Defense

How are you feeling today?

• GREAT!

• Pretty Good.

• Meh....

• tired

Draw a symbol to represent how you are feeling.

The ________ line of defense includes physical and chemical barriers.

Which of the following is NOT part of the first line of defense?

• Mucous membranes

• Macrophages

• Cilia

• Pathogen-busting enzymes in sweat

Pathogens are recognized by the

• Antigens on their cell membrane surface

• Antibodies they produce

• Their smell

• Their behaviour

Draw a macrophage.

How do bacterial and viral pathogens differ in their response to antibiotics

• Neither respond

• Both respond

• Bacteria do not respond but viruses do

• Bacteria respond but viruses do not

What is the function of the innate immune system?

• To react quickly

• To localize the infection

• To trap pathogens

• All of the above

The second line of defense is also known as __________

How are we doing on this so far???

• Fantastic! I'm an immune system expert!

• Okay ... but I wish I knew more!

• I have heard of the immune system but NONE of this makes sense to me!

• Immune System?!? What immune system?!?