18 Questions
What role do some T cells play in enhancing the innate immune response?
Secreting cytokines that increase the ability of macrophages to kill ingested microbes
What is a key difference between the innate and adaptive immune responses?
The ability to recognize a wide repertoire of foreign substances, with innate responses being more limited
What is the role of antibodies in the innate immune response?
Marking pathogens for attack by complement and serving as a potent activator of the attack
What is an example of innate immunity that is not based on lymphocytes?
The immune system of insects
What is the main advantage of adaptive immunity over innate immunity?
Ability to recognize a wider repertoire of foreign substances
What is the result of antibodies binding to pathogens in the innate immune response?
Marking pathogens for attack by complement and serving as a potent activator of the attack
What is the role of dendritic cells in the immune response?
To present antigens to T-cells
In which part of the cell are endogenous antigens degraded?
Cytoplasm
What is displayed on the cell surface as a result of antigen processing?
Antigenic peptides complexed with class II MHC molecules
What is a characteristic of the inflammatory response?
Inflammation and swelling at the site of infection
What is the primary function of the innate immune system?
To provide a first line of defense against infection
What is a dysfunction of the immune system that can lead to infection?
Loss of immune function
What is the primary function of phagocytic cells, such as macrophages and neutrophils?
To engulf and digest foreign particles and microorganisms
What determines the specificity of a lymphocyte's receptor?
The specific receptor's binding properties before antigen exposure
Which component of the immune system is uniform in all members of a species?
Innate immunity
What is the result of antigen binding to its specific receptor on a lymphocyte?
The cell proliferates into a clone of cells with the same immunologic specificity
What is the primary function of the innate immune system?
To provide the first line of defense against infection
What is the characteristic of adaptive immunity that distinguishes it from innate immunity?
It does not come into play until there is an antigenic challenge
Learn about the adaptive immune system's role in enhancing innate responses, including the production of cytokines and antibodies that aid in pathogen destruction. Understand how T cells and macrophages work together to combat infections.
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