Immune System Crash Course

What is part of the body's first line of defense?

• tonsils and adenoids

• skin and mucous membranes

• antibodies

• lymph nodes

Which cells are responsible for fighting infection?

• erythrocyte

• platelets

• leukocytes

• thrombocytes

What are the special leukocytes called that ingest microorganisms?

• phagocytes

• macrophages

• lysosomes

• erythrocytes

Dead neutrophils collect together to form what?

• scabs

• lymph nodes

• pus

• thrombocytes

How are macrophages different from neutrophils?

• neutrophils die after ingesting microorganisms and macrophages do not

• macrophages die after ingesting microorganisms and neutrophils do not

What is the only phagocyte in the innate immune system that destroys other human cells?

• natural killer cells

• macrophages

• B cells

Which cells ingest pathogens and then pass along information to the rest of the immune system?

• dominant cells

• dendritic cells

• axonic cells

• lysosomes

An ______ is anything that causes your immune system to identify a pathogen and create an antibody against it. 

• antigen

• antibody

Helper T cells can kill pathogens themselves.

• True

• False

The humoral response is designed to handle pathogens floating around in the body that have not caused an infection yet.

• True

• False