Our Bloodstream and defense against pathogens

What is the primary role of neutrophils in the immune system?

• Detecting and destroying pathogens through phagocytosis

• Producing antibodies to block viruses

• Signaling other immune cells

• Creating memory of invaders

Which component of the immune system is responsible for 'remembering' specific invaders?

• Innate immune system

• Adaptive immune system

• Neutrophils

• Macrophages

How do macrophages contribute to the immune response?

• By producing antibodies

• By engulfing and destroying pathogens

• By forming pus

• By signaling the liver to produce more white blood cells

What is the main component of pus?

• Dead neutrophils

• Macrophages

• Cytokines

• Red blood cells

Which of the following is NOT a function of white blood cells?

• Engulfing pathogens

• Producing antibodies

• Carrying oxygen

• Signaling other immune cells

How does the adaptive immune system differ from the innate immune system?

• It reacts immediately to pathogens

• It has memory of specific invaders

• It uses phagocytosis to destroy pathogens

• It is the first line of defense

What role do cytokines play in the immune response?

• They destroy pathogens directly

• They stimulate the production of white blood cells

• They form the main component of pus

• They carry oxygen in the bloodstream