The Immune System

What is a Pathogen?

• A Microorganism that causes disease
• A Microorganism that fights disease
• A strange looking thing on your skin
• A protein that attaches to a germ

Cells that ingest pathogens are

• plasma cells
• phagocytic cells
• helper T cells
• antibodies

_________________ is produced by a virus infected cell to warn other body cells and to help kill virus particles with heat.

• Interferon
• Complement
• Antibody
• thymus

Mast cells produce __________________ which causes the inflammatory response.

• Cytokines called Interleukins
• Cytokines called Histamines
• Cytokines called Antibodies
• Cytokines called interstitial fluids

What is the major function of B-Cells?

• To produce antibodies
• To kill viruses
• To kill people
• To eat pathogens

A(n) _______ ________ is what happens when your body reacts to a non-harmful substance as if it was a pathogen

• antibody production
• allergic reaction
• interferon production
• passive response

The immune system is made up of:

• Tissues such as lymph nodes
• Organs such as the spleen and appendix
• Cells such as phagocytes and lymphocytes
• All of the above

As part of the immune system, white blood cells fight germs. Another name for white blood cells is:

• Rhinovirus
• Leukocytes
• Glands
• Nodes

Leukocytes are found in lots of places, including an organ in your abdomen that filters blood and helps fight infections known as the:

• Heart
• Spleen
• Kidneys
• Brain

The four main types of germs are:

• Viruses, bacteria, parasites, and fungi
• Viruses, parasites, fungi, and phagocytes
• Parasites, bacteria, lymphocytes, and fungi
• A.  Small, medium, large, and extra large