Immunity Flashcards
What are the types of immunity?
Innate and acquired immunity
What is innate immunity?
Non specific, inborn defense mechanism
What does innate immunity include?
Skin → resists invasion by most pathogens
Digestive enzymes and gastric acidity destroys organisms
Phagocytosis of bacteria & foreign bodies by neutrophils and tissue macrophages
Chemical compounds in blood and tissue that destroy organisms
List the chemical compounds in blood and tissue that destroy the organisms
Lysozyme
Complement system
Interferons
C-reactive protein
What is acquired immunity?
Ability to develop an extremely powerful specific immune response against a certain type of bacteria or virus once enter the body
What are the types of acquired immunity?
Humoral immunity
Cellular immunity
Which immunity is mediated by B - lymphocytes?
Humoral immunity
What are the type of cells present in humoral immunity?
Plasma cells
Memory B cells
What do plasma cells secrete?
Immunoglobulins → attacks invading antigens
What is a type of immunoglobulin?
IgA → found in breast milk and etc.
Which immunity is mediated by t-lymphocytes?
Cellular immunity
Cellular immunity constitutes a major defense against what?
Viruses, fungi, bacteria and tumor cells and foreign tissue transplant
T-lymphocytes differentiate into what?
Cytotoxic T cells (killer cells)
Helper T cells
Suppressor T cells
T memory cells
What are the suppressor T cells important for?
Transplant
