Human Physiology: An Integrated Approach (7th Edition)
Human Physiology: An Integrated Approach (7th Edition)
7th Edition
ISBN: 9780321981226
Author: Dee Unglaub Silverthorn
Publisher: PEARSON
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Chapter 12, Problem 1CC

Identify as many pairs of antagonistic muscle groups in the body as you can. If you cannot name them, point out the probable location of the flexor and extensor of each group.

Expert Solution
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Summary Introduction

To determine: The pairs of antagonistic muscle groups present in the human body.

Introduction: Muscles are the bundle of fibrous tissue present in the body of an organism. The muscles are responsible for the contraction, movements and maintaining the position of different body parts.

Explanation of Solution

Antagonistic muscles are the group of muscles that move bones in the opposite direction. This is because the muscle contraction can pull the bone, but it can not push the bone away. The antagonistic group of muscles consists of flexor and extensor pair of muscle.

Some of the antagonistic muscle groups are as follows:

  • Biceps and triceps muscle.
  • Hamstring and quadriceps muscles.
  • Tibialis anterior and gastrocnemius muscles.
Conclusion

Thus, biceps and triceps muscle; hamstring and quadriceps muscles; and tibialis anterior and gastrocnemius muscles are some of the antagonistic muscles present in a body.

Expert Solution
Check Mark
Summary Introduction

To determine: The location of flexor and extensor muscles in antagonistic muscle groups.

Introduction: Flexor muscles bring the bones close together after contraction. This movement of contraction of flexor muscles is called flexion. On the other hand, extensor muscles move away the bone from each other after contraction. The movement of contraction of extensor muscles is called extension.

Explanation of Solution

Some of the antagonistic muscle groups with their location are as follows:

  • Biceps and triceps muscle present in the upper arm. Biceps are flexor muscles, whereas triceps are extensor muscles.
  • Hamstring and quadriceps muscles present in the upper leg in which hamstring are flexor muscles and quadriceps are extensor muscles.
  • Tibialis anterior and gastrocnemius muscles are present in the ankle for the foot movement. Tibialis anterior is the flexor muscle, whereas gastrocnemius is the extensor muscles.
Conclusion

Thus, biceps, hamstring and tibialis anterior are the flexor muscles whereas triceps, quadriceps and gastrocnemius are the extensor muscles.

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Chapter 12 Solutions

Human Physiology: An Integrated Approach (7th Edition)

Ch. 12 - Prob. 11CCCh. 12 - Prob. 12CCCh. 12 - Prob. 13CCCh. 12 - According to the convention for naming enzymes,...Ch. 12 - Prob. 15CCCh. 12 - Prob. 16CCCh. 12 - Summation in muscle fibers means that the...Ch. 12 - Prob. 18CCCh. 12 - Which type of runner would you expect to have more...Ch. 12 - What is the response of a muscle fiber to an...Ch. 12 - Prob. 21CCCh. 12 - One study found that many world-class athletes...Ch. 12 - What is the response of a muscle fiber to an...Ch. 12 - Prob. 24CCCh. 12 - Prob. 25CCCh. 12 - Prob. 26CCCh. 12 - Prob. 27CCCh. 12 - Prob. 28CCCh. 12 - What happens to contraction if a smooth muscle is...Ch. 12 - Prob. 30CCCh. 12 - Prob. 31CCCh. 12 - Prob. 32CCCh. 12 - How can a neuron alter the amount of...Ch. 12 - Prob. 34CCCh. 12 - Prob. 35CCCh. 12 - The three types of muscle tissue found in the...Ch. 12 - Which two muscle types are striated?Ch. 12 - Which type of muscle tissue is controlled only by...Ch. 12 - Arrange the following skeletal muscle components...Ch. 12 - The modified endoplasmic reticulum of skeletal...Ch. 12 - Prob. 6RQCh. 12 - Prob. 7RQCh. 12 - List six proteins that make up the myofibrils....Ch. 12 - List the letters used to label the elements of a...Ch. 12 - Briefly explain the functions of titin and...Ch. 12 - During contraction, the __________ band remains a...Ch. 12 - Explain the sliding filament theory of...Ch. 12 - Explain the roles of troponin, tropomyosin, and...Ch. 12 - Which neurotransmitter is released by somatic...Ch. 12 - What is the motor end plate, and what kinds of...Ch. 12 - Prob. 16RQCh. 12 - Prob. 17RQCh. 12 - Prob. 18RQCh. 12 - The basic unit of contraction in an intact...Ch. 12 - The two functional types of smooth muscle are...Ch. 12 - Prob. 21RQCh. 12 - Prob. 22RQCh. 12 - Prob. 23RQCh. 12 - Define muscle fatigue. Summarize factors that...Ch. 12 - Prob. 25RQCh. 12 - Prob. 26RQCh. 12 - Prob. 27RQCh. 12 - What is the role of the sarcoplasmic reticulum in...Ch. 12 - Compare and contrast: a. fast-twitch...Ch. 12 - Prob. 30RQCh. 12 - One way that scientists study muscles is to put...Ch. 12 - Prob. 32RQCh. 12 - On the basis of what you have learned about muscle...Ch. 12 - Prob. 34RQCh. 12 - Prob. 35RQ
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