Multiple Choice
Which of the following statements about the complement system is true?
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Table of contents
- 1. Introduction to Anatomy & Physiology5h 40m
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- Review of the Complement System13m
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21. The Immune System
Review of the Complement System
Multiple Choice
Which complement molecule is an attractant for neutrophils?
A
C4b.
B
C5a.
C
C3b.
D
C7a.
Verified step by step guidance1
Understand the role of complement molecules in the immune system. Complement molecules are part of the complement system, which enhances the ability of antibodies and phagocytic cells to clear pathogens from an organism.
Identify the specific function of each complement molecule listed. C4b, C3b, C5a, and C7a have different roles in the immune response.
Recognize that C5a is known for its role as a chemoattractant. It attracts neutrophils and other immune cells to the site of infection, facilitating an inflammatory response.
Consider the mechanism of action of C5a. It binds to receptors on neutrophils, triggering their migration towards the source of the complement activation.
Conclude that C5a is the complement molecule that acts as an attractant for neutrophils, based on its function in the immune system.
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