5.2 Immune System Defences

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 defense against disease?

• skin

• blood

• antibodies

• enzymes

Which one is a way the body defends against a pathogen?

• Fever
• Stomach Acid digesting
• White Blood Cells fighing
• All of these are correct

An agent that causes a disease is a...

• Pathogen

• Coronavirus

• Antigen

• Leukocyte

This type of immunity can be called nonspecific and refers to the bodies defenses that are present since birth.

• resistance

• adaptive immunity

• acquired immunity

• innate immunity

This type of immunity is acquired during one's lifetime. It is induced by antigens that invade the body.

• innate immunity

• adaptive immunity

• nonspecific immunity

• normal microbiota

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

• skin
• B cells
• sweat
• lysozyme

Which type of immunity has memory?

• innate
• adaptive/acquired

Which line of defense includes the skin, sweat, mucous membranes, and normal microbiota?

• First
• Second
• Third

This system learns about different pathogens over time. It takes longer to respond and has specific responses for different types of pathogens

• innate immune system

• adaptive immune system