Understanding the Immune System

What is the primary function of the immune system?

• To produce energy for the body

• To aid in digestion

• To defend the body against pathogens

• To regulate body temperature

Which of the following is NOT a component of the immune system?

• Pathogens

• Red blood cells

• Antibodies

• White blood cells

What is the role of the skin in the immune system?

• To act as a barrier against pathogens

• To produce antibodies

• To destroy infected cells

• To transport lymph fluid

What triggers the inflammatory response?

• Lack of oxygen in tissues

• Presence of a pathogen or tissue injury

• High blood sugar levels

• Excessive exercise

Which cells are involved in the inflammatory response?

• Platelets

• Neurons

• Red blood cells

• Phagocytes

What is the main difference between innate and adaptive immunity?

• Adaptive immunity is faster than innate immunity

• Innate immunity involves antibodies, adaptive does not

• Adaptive immunity is specific, innate is not

• Innate immunity is specific, adaptive is not

What do T cells do in the adaptive immune response?

• Produce antibodies

• Directly destroy infected cells

• Transport oxygen

• Digest food particles

How do vaccines help the immune system?

• By creating immunological memory

• By introducing active pathogens

• By increasing body temperature

• By destroying white blood cells

What is the function of lymph nodes in the immune system?

• To filter pathogens and house immune cells

• To regulate blood pressure

• To produce red blood cells

• To store energy

Which organ is NOT part of the lymphatic system?

• Spleen

• Thymus

• Liver

• Tonsils