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 do antibodies attach to on the pathogen?

• Anti inflammatory
• Antigens
• Antiseptic
• Antibodies

Pathogens are recognized by their...

• antigens
• antibodies
• killer t-cells
• B-cells

Out of t-cells and b-cells which is the helper cell?

• b-cells
• t-cells
• neither
• both

What body system protects animals against invaders such as bacteria and viruses?

• Immune System
• Digestive System
• Neurologic System
• Respiratory System

This type of immunity is received from vaccinations.

• Passive Immunity
• Active immunity
• Vaccination Maximus
• Immunity Maximus

The blue molecule in this image is a(n) _______

• Antibody
• Antigen
• Pathogen
• Blood cell

The orange molecule in this image is a(n) _______

• Antibody
• Antigen
• Antibiotic
• Blood cell

Which of the following is NOT part of the external defenses?

• Mucus
• White blood cells
• Skin
• Tears

What is the role of histamines?

• Causes fever
• Causes inflammation
• Produces antibodies
• It is a pathogen