Open Question
What is inflammation? How does it protect the body? Why is inflammation considered part of the innate immune response?
41. Immune System
Innate Immunity
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If microorganisms penetrate the innate defenses, an inflammatory response may be initiated by the __________.
A
accumulation of phagocytes in an injured area
B
release of interferon by infected cells
C
increased blood flow to an infected or injured area
D
discharge of cytokines from neutrophils
E
release of chemicals such as histamine by mast cells
Verified step by step guidance1
Understand the role of the inflammatory response: The inflammatory response is a crucial part of the immune system's defense mechanism, activated when pathogens breach the body's innate defenses.
Identify the key players in inflammation: Mast cells are important cells in the immune system that release chemicals like histamine, which play a significant role in initiating inflammation.
Recognize the function of histamine: Histamine is a chemical that causes blood vessels to dilate and become more permeable, allowing immune cells to reach the site of infection or injury more easily.
Connect the release of histamine to inflammation: When mast cells release histamine, it leads to increased blood flow and the accumulation of immune cells at the site, contributing to the inflammatory response.
Conclude the process: The release of chemicals such as histamine by mast cells is a key trigger for the inflammatory response, helping to protect the body by isolating and eliminating pathogens.
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