Phagocytes + lymphocytes

• What is a pathogen?

  A disease-causing organism
• What is the primary function of red blood cells?

  Transporting oxygen
• What are the two types of white blood cells mentioned?

  Lymphocytes and phagocytes
• How can lymphocytes be identified under a microscope?

  They have a large nucleus
• What distinguishes phagocytes from lymphocytes?

  Phagocytes have a lobed nucleus
• What are antigens?

  Substances on pathogens recognized by antibodies
• What do lymphocytes produce in response to pathogens?

  Antibodies
• What happens when antibodies attach to antigens?

  They lead to the destruction of the pathogen
• What is one method antibodies use to destroy pathogens?

  They can split open the pathogen's membrane
• How do antibodies assist phagocytes?

  They make it easier for phagocytes to find pathogens
• What is the consequence of needing specific antibodies for specific pathogens?

  It may take time for the body to respond
• What are memory cells?

  Cells that remember specific pathogens
• What happens when a pathogen re-enters the body?

  Memory cells produce antibodies quickly
• What is the role of phagocytes in the immune response?

  They engulf and destroy pathogens
• What is the correct term for how phagocytes deal with pathogens?

  They engulf pathogens
• What happens to pathogens once they are inside a phagocyte?

  They are destroyed using enzymes
• What do phagocytes do with the harmless products of pathogens?

  They exit the cell after destruction
• What are the names and functions of the blood cells shown in a microscope image?

  • Red blood cell: Transports oxygen
  • Lymphocyte: Helps destroy pathogens
  • Phagocyte: Engulfs pathogens
• What is the mistake students often make regarding phagocytes?

  They say phagocytes eat pathogens
• What is the importance of using correct vocabulary when describing phagocytes?

  It ensures accurate understanding of their function