Explanation Explanation/justification for the correct answer: Rectus spinae is the muscle that maintains the upright posture of the human body and straightens the spine after bending of waist whereas rectus abdominis flexes waist (as it bends forward) and vertebral column (at lumbar region). Hence, both the muscles work as antagonists. Explanation for incorrect answer: Semispinalis thoracis: This muscle controls the contralateral rotation and extension of the vertebral column and does not involve in maintaining the movement of the vertebral column as rectus spinae...

6th Edition

ISBN: 9781260210262

Author: SALADIN

Publisher: RENT MCG

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Chapter 11, Problem 1TYR

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Introduction:

Antagonists are the muscles that oppose the action of the prime mover (responsible for most of the force production during a joint movement).

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Chapter 11, Problem 11.5.12AYLO

Chapter 11, Problem 2TYR

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Chapter 11 Solutions

HUMAN ANATOMY

Ch. 11.1 - Name and define each connective tissue of a muscle...Ch. 11.1 - Describe how the fascicles of a muscle are...Ch. 11.1 - Prob. 3BYGO Ch. 11.1 - Prob. 4BYGO Ch. 11.1 - Prob. 5BYGO Ch. 11.1 - Prob. 6BYGO Ch. 11.2 - Prob. 1AWYK Ch. 11.2 - Prob. 7BYGO Ch. 11.2 - Prob. 8BYGO Ch. 11.2 - Prob. 9BYGO

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Antagonists are the muscles that oppose the action of the prime mover (responsible for most of the force production during a joint movement).

Solution Summary: The author explains that both rectus abdominis and semispinalis thoracis work as antagonists.

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Introduction: Antagonists are the muscles that oppose the action of the prime mover (responsible for most of the force production during a joint movement).

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Chapter 11 Solutions

Introduction:

Antagonists are the muscles that oppose the action of the prime mover (responsible for most of the force production during a joint movement).