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Autacoids and Local Hormones Quiz

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Questions and Answers

Which of the following best describes autacoids?

Substances released by specialized types of cells, not neurons, and act on adjacent target cells (correct)

Substances released by neurons and act on distant target cells

Substances released by endocrine glands and act on distant target cells

Substances released by all types of cells and act on adjacent target cells

Which category does histamine belong to?

Others

Lipids

Biogenic amines (correct)

Polypeptides

What is the function of autacoids?

Act as neurotransmitters in the central nervous system

Act on adjacent target cells (correct)

Act as hormones in the endocrine system

Act on distant target cells

Which of the following is an example of a polypeptide autacoid?

<p>Substance P</p> Signup and view all the answers

In which category do eicosanoids, leukotrienes, and platelet activating factor belong?

<p>Lipids</p> Signup and view all the answers

Study Notes

Autacoids

Autacoids are locally acting hormone-like substances that are produced by cells and have a variety of physiological effects on nearby tissues.
Histamine is a type of autacoid.
Autacoids play a crucial role in regulating various physiological processes, including inflammation, immune responses, and vascular tone.

Types of Autacoids

Bradykinin is an example of a polypeptide autacoid.
Eicosanoids, leukotrienes, and platelet activating factor belong to the category of lipid autacoids.

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Description

Test your knowledge of autacoids and local hormones with this quiz based on the fundamental principles of pharmacology. Explore the concepts of autocrine secretions, paracrine secretions, and the actions of these local hormones on cells.