The Immune System

What is body system is responsible for defending the body against invading pathogens?

What body system's key components are not organs, but cells?

Another name for white blood cells

What is the most important part of the immune system?

What part of the immune system protects the body against invading pathogens?

Which white blood cells engulf and dispose of bacteria, viruses and cellular debris?

What is a chemical messenger that causes the blood vessels to dilate and become more permeable, causing inflammation in the body?

What is a chemical messenger that tells uninfected cells to produce antiviral compounds to protect them from becoming infected?

What white blood cells produce antibodies?

What are Y-shaped protein molecules that act like molecular homing missles?