객관식
Which complement molecule is an attractant for neutrophils?
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21. The Immune System
Review of the Complement System
Multiple Choice
Which of the following statements about the complement system is true?
A
There are many methods of triggering the complement system.
B
There are many immune responses triggered by the complement system.
C
All triggers of the complement system lead to the formation of C3 convertase.
D
C3a and C3b result in different immune response for the complement system.
E
All of the above are true.
검증된 단계별 안내1
Understand the complement system: The complement system is a part of the immune system that enhances the ability of antibodies and phagocytic cells to clear pathogens and damaged cells, promote inflammation, and attack the pathogen's cell membrane.
Identify the triggers: The complement system can be activated through several pathways, including the classical pathway, the lectin pathway, and the alternative pathway. Each pathway involves different molecules and mechanisms to initiate the complement cascade.
Recognize the formation of C3 convertase: Regardless of the pathway that triggers the complement system, they all converge at the formation of C3 convertase, which is crucial for the activation of the complement cascade.
Understand the roles of C3a and C3b: C3 convertase cleaves C3 into C3a and C3b. C3a acts as an anaphylatoxin, contributing to inflammation, while C3b acts as an opsonin, marking pathogens for destruction by phagocytes.
Conclude the statements: Given the explanations above, all the statements about the complement system are true, as they describe different aspects and functions of the complement system in the immune response.
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