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Questions and Answers
What is the main action of histamine?
Where is serotonin primarily sourced from?
What are the main actions of serotonin?
What influences vasomotor phenomena, vascular permeability, chemotaxis, and pain in the inflammatory process?
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What is the source of arachidonic acid derivatives such as prostaglandins and leucotrienes?
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Which of the following is an exogenous mediator of acute inflammation?
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What is the main action of histamine?
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Where is serotonin (5-hydroxytryptamine) sourced from?
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Which of the following is an action of arachidonic acid derivatives?
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What are the main sources of vasoactive amines?
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Study Notes
Histamine and Serotonin
- Histamine plays a crucial role in vasodilation, increasing vascular permeability, and smooth muscle contraction.
- Serotonin (5-hydroxytryptamine) is primarily sourced from the enterochromaffin cells of the intestinal mucosa and the serotonergic neurons of the central nervous system.
Actions of Serotonin
- Serotonin causes vasoconstriction, reduces inflammation, and modulates pain perception.
Arachidonic Acid Derivatives
- Arachidonic acid derivatives, such as prostaglandins and leukotrienes, influence vasomotor phenomena, vascular permeability, chemotaxis, and pain in the inflammatory process.
- These derivatives are sourced from the cell membrane phospholipids.
Exogenous Mediator of Acute Inflammation
- Bradykinin is an exogenous mediator of acute inflammation.
Vasoactive Amines
- The main sources of vasoactive amines are mast cells, platelets, and enterochromaffin cells.
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Description
Test your knowledge of the mediators of acute inflammation with this quiz. Explore the role of exogenous and endogenous mediators, including vasoactive amines, arachidonic acid derivatives, and more.
