First Line Defense

This sticky fluid traps any pathogens that try and get in our body

• Mucous Lining

• Blood

• Stomach Acid

• Skin

What is the largest outer defense of the body?

• Stomach Acid 
• Mucous Membranes
• White Blood Cells
• Skin

What is the main purpose of the immune system?

• support the body through bones and muscles
• get rid of waste from the body
• protect the body from pathogens
• move blood through the body

What is the body's first line of defence against infection?

• Physical barriers

• White blood cells

• Blood plasma

• Red blood cells

Which of the following is an example of a physical barrier?

• Defensins

• Intact Skin

• Skin Bacteria

• Lysosomes in Saliva

Which of the following is an example of a chemical barrier?

• Bark

• Hairs

• Stomach Acid

• Bacteria in GI tract

Which of the following can be pathogens?

• Bacteria only

• Viruses only

• Bacteria and viruses

• Neither bacteria or viruses

Infectious diseases are caused by _________ in the body.

• pathogens

• decomposers

Which pathogen is non-living?

• Virus

• Bacteria

• Fungi

• Parasite/Protist

• They are all alive

Which pathogen is treated with antibiotics?

• virus

• bacteria

• parasite

• fungi