Introduction Flashcards
(24 cards)
What is the primary function of the immune system?
To protect the body from pathogens and foreign substances.
True or False: The immune system can differentiate between self and non-self cells.
True
What are the two main branches of the immune system?
Innate immunity and adaptive immunity.
Fill in the blank: ______ immunity is the first line of defense against pathogens.
Innate
What is the role of antibodies in the immune response?
To recognize and neutralize foreign substances.
Which cells are responsible for initiating the adaptive immune response?
T cells and B cells.
What is the purpose of vaccination?
To stimulate the immune system to develop immunity to specific pathogens.
What is an antigen?
A molecule that can be recognized by the immune system and elicit an immune response.
True or False: Memory cells are part of the innate immune system.
False
What is the function of dendritic cells in the immune response?
To present antigens to T cells and initiate an adaptive immune response.
What type of immunity is provided by antibodies passed from mother to fetus through the placenta?
Passive immunity
What are cytokines?
Signaling molecules that mediate communication between immune cells.
Which cells are responsible for producing antibodies?
B cells.
What is the function of natural killer cells in the immune response?
To destroy virus-infected cells and tumor cells.
Fill in the blank: T cells mature in the ______.
Thymus
What is the primary function of the complement system in the immune response?
To enhance the ability of antibodies and phagocytic cells to clear pathogens.
True or False: The immune system can develop memory to provide faster and stronger responses upon re-exposure to a pathogen.
True
What is the role of phagocytes in the immune response?
To engulf and digest pathogens.
Which type of immunity is acquired through vaccination or recovery from an infection?
Active immunity
Fill in the blank: Toll-like receptors are a type of ______ that recognize pathogen-associated molecular patterns.
Receptor
What is the purpose of inflammation in the immune response?
To recruit immune cells to the site of infection and promote tissue repair.
True or False: The immune system can develop tolerance to self-antigens to prevent autoimmune reactions.
True
What is the function of macrophages in the immune response?
To phagocytize pathogens and debris, and activate other immune cells.
What is the difference between primary and secondary immune responses?
Primary response is the first encounter with a pathogen, while secondary response is faster and stronger upon re-exposure.
