Biology (MindTap Course List)
Biology (MindTap Course List)
11th Edition
ISBN: 9781337392938
Author: Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher: Cengage Learning
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Chapter 49, Problem 1TYU

A cell secretes a product that diffuses through the interstitial fluid and acts on nearby cells. This process is an example of (a) neuroendocrine secretion (b) autocrine signaling (c) paracrine signaling (d) classical endocrine regulation (e) peptide hormone function

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Summary Introduction

Introduction: The endocrine system is the chemical signaling system that uses blood vessels as information channels. The endocrine glands are ductless organs located within the organ systems and contain groups of endocrine cells that secrete their hormones directly into their surroundings.

Answer to Problem 1TYU

Correct answer: A cell secretes a product that diffuses through the interstitial fluid and acts on nearby cells. This process is an example of paracrine signaling. Hence, the correct answer is option (c).

Explanation of Solution

Reason for the correct answer:

Option (c) is given as “paracrine signaling”.

When a cell signals nearby cells by using chemical messengers is known as paracrine signaling. It acts on neighboring cells. In paracrine signaling, the ligands diffuse through interstitial fluid, gap junctions, and extracellular matrix. Hence, the correct answer is option (c).

Reasons for incorrect answers:

Option (a) is given as “neuroendocrine secretion”. The type of endocrine signaling in which neurohormones are secreted by neuroendocrine cells and released into the intestinal fluid is known a neuroendocrine signaling. It acts on specific target cells. Hence, option (a) is incorrect.

Option (b) is given as “autocrine signaling”. When a cell signals itself by using chemical messengers is known as autocrine signaling. Hence, option (b) is incorrect.

Option (d) is given as “classical endocrine regulation”. The type of endocrine signaling in which hormones are secreted by the endocrine glands and are transported to target cells through the blood is known a classical endocrine signaling. Hence, option (d) is incorrect.

Option (e) is given as, “peptide hormone function”. Peptide hormone carries out its action by way of second messengers. This hormone binds with G protein-linked receptor in plasma membrane. Hence, option (e) is incorrect.

Hence, options (a), (b), (d), and (e) are incorrect.

Conclusion

A cell secretes a product that diffuses through the interstitial fluid and acts on nearby cells. This is an example of paracrine signaling.

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Students have asked these similar questions
1) Gross Anatomy and Basic Function of the Endocrine Glands   a)Both the endocrine and nervous systems are major regulating systems of the body; however, the nervous system has been compared to a text message, and the endocrine system to mailing a letter. Briefly explain this comparison. b) Chemically, hormones belong chiefly to two molecular groups, the___ and the___ c) If hormones travel in the bloodstream, why don't all tissues respond to all hormones?
1)What tissue regulates both the adenohypophysis and the neurohypophysis?  Does this tissue regulate lots of physiological functions?  Give a few examples.  2) All of the following are directly controlled by a hormonal stimulus from the hypothalamus  EXCEPT… a)GH, Growth hormone  b) FSH     c) Oxytocin.   d) TSH, Thyroid Stimulating Hormone 3) How would a tumor in cells that produce TSH affect levels of TSH in the blood?              increase  /  decrease  / normal    4) How would this affect hormone secretion by the target cells of TSH?            increase  /  decrease  /  normal
Which of the following statements is true?   Question 2 options:   a)  All cells will respond to the hormonal signal because hormones are broadcast throughout the body.   b)  The regulation of inflammatory responses at the site of an infection is an example of paracrine signaling.   c)  Paracrine signaling involves the secretion of stimuli into the bloodstream for distribution throughout the organism.   d)  The axons of neurons typically signal target cells using membrane-bound signaling molecules that act on receptors in the target cells.
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Great Glands - Your Endocrine System: CrashCourse Biology #33; Author: CrashCourse;https://www.youtube.com/watch?v=WVrlHH14q3o;License: Standard Youtube License