B lymphocytes and humoral immunity

Cards (21)

  • What does humoral immunity involve?
    Antibodies soluble in blood and tissue fluid
  • What do different types of B cells produce?
    Different antibodies that respond to antigens
  • What happens when an antigen enters the blood or tissue fluid?
    A specific B cell produces a complementary antibody
  • How does the antibody interact with the antigen?
    The antibody attaches to the antigen and enters the B cell
  • What is the process called when T helper cells stimulate B cell division?
    Clonal selection
  • Why do pathogens have many proteins on their surface?
    They are all antigens that trigger B cell response
  • What are monoclonal antibodies?
    Antibodies produced by identical B cell clones
  • What are the two types of cells that B cell clones can develop into?
    • Plasma cells: secrete antibodies into blood plasma
    • Memory cells: responsible for secondary immune response
  • What is the role of plasma cells in the immune response?
    They secrete antibodies for immediate defense
  • How long do plasma cells survive?
    A few days
  • How many antibodies can plasma cells make during their lifespan?
    Around 2000 antibodies
  • What is the function of memory cells?
    They provide a faster secondary immune response
  • How do memory cells respond when a pathogen is detected?
    They divide rapidly into plasma and more memory cells
  • How does the speed of plasma cell antibody production compare between primary and secondary immune responses?
    Faster in the secondary immune response
  • What is the definition of humoral immunity?
    Immune response involving antibodies in fluids
  • What role do T helper cells play in B cell activation?
    They stimulate B cell division by mitosis
  • What is the difference between primary and secondary immune responses?
    Secondary response is faster than primary
  • How do memory cells compare to plasma cells in terms of lifespan?
    Memory cells live longer than plasma cells
  • What is the process of endocytosis in B cells?
    Antigen enters the B cell for processing
  • Why is clonal selection significant in the immune response?
    It ensures specific antibodies are produced
  • What is the relationship between antigens and antibodies?
    Antigens trigger antibody production