Body Defenses and Immune System Worksheet

This body system is a network that is designed to detect, isolate, and destroy harmful substances: ________

• Immune system

• Digestive system

• Respiratory system

• Skeletal system

Long-term resistance to disease is called: ________

• Immunity

• Infection

• Allergy

• Contagion

Any disease-causing agent is called a: ________

• Pathogen

• Antibody

• Vaccine

• Enzyme

This kind of defense is designed to keep out any sort of disease-causing agent: ________

• Nonspecific defense

• Specific defense

• Adaptive immunity

• Cell-mediated response

This kind of defense consists of cells that are trained to find and attack specific kinds of pathogens: ________

• Specific defense

• Nonspecific defense

• Physical barrier

• Chemical barrier

Which nonspecific defense is your body’s first line of defense against invaders?

• Skin

• White blood cells

• Antibodies

• Vaccines

Which nonspecific defense lines the insides of body cavities such as your mouth and nose?

• Mucous membranes

• Skin

• Sweat glands

• Hair follicles

If the invader multiplies and travels to affect the whole body, the body responds by causing: ________

• Fever

• Cough

• Rash

• Headache

Your body’s final line of defense is a specific defense that consists of a group of white blood cells called: _____________.

• Lymphocytes

• Erythrocytes

• Platelets

• Monocytes

These specialized cells destroy the body's own cells that have themselves been taken over by viruses or become cancerous: _____________.

• T cells (specifically cytotoxic T cells)

• B cells

• Red blood cells

• Platelets