Understanding the Immune System

What is the primary role of the immune system?

• To produce red blood cells

• To protect the body against infections and diseases

• To aid in digestion

• To keep the body temperature constant

Where do leukocytes originate?

• In the kidneys

• In the bone marrow

• In the heart

• In the liver

What triggers the body's immune response?

• Vitamins

• Red blood cells

• Antigens

• Antibodies

Which of the following is not a leukocyte?

• Macrophage

• B-cell

• T-cell

• Platelet

Which cells are responsible for producing antibodies?

• Phagocytes

• T-cells

• B-cells

• Macrophages

What is the purpose of a fever during an infection?

• To signal to others that we are ill

• To make the body uncomfortable

• To consume energy

• To make it harder for bacteria and viruses to reproduce

What is the main reason for swelling during an infection?

• To attract more leukocytes to the site of infection

• To increase body temperature

• To signal to the brain that there is an issue

• To reduce the effectiveness of pathogens

How does the immune system aid in developing long-term immunity?

• By increasing body temperature

• By reducing the number of leukocytes

• By forgetting past infections

• By recognizing and swiftly responding to familiar antigens

What can cause the immune system to attack the body's own cells?

• A high number of antigens

• Autoimmune diseases

• A strong immune response

• Excessive production of antibodies

What is not a function of the immune system?

• Fighting off infections

• Producing digestive enzymes

• Developing long-term immunity

• Protecting against diseases