A+P LAB MANUAL +CONNECT ACCESS UPDT
A+P LAB MANUAL +CONNECT ACCESS UPDT
2nd Edition
ISBN: 9781260536966
Author: McKinley
Publisher: INTER MCG
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Textbook Question
Chapter 11, Problem 1DYKB

_____ 1. Which statement is true about an agonist?

  1. a. It opposes the function of the prime mover.
  2. b. It is the primary muscle that produces a movement.
  3. c. It functions primarily to stabilize a joint.
  4. d. Its muscle fibers are always circular in structure.
Expert Solution & Answer
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Summary Introduction

Introduction:

Muscle has defined a type of soft tissue found in animals and humans. There are three types of muscles such as striated muscle, non-striated, and cardiac muscle. It is composed of actin and myosin protein filaments that slide into one another and caused contraction of the muscle. It helps to produce force and motion.

Answer to Problem 1DYKB

Correct answer:

Agonist is the primary muscle that produces movement. Therefore, option b. is correct.

Explanation of Solution

Reason for the correct statement:

Option b. is given as “It is the primary muscle that produces a movement”. Agonist is also called a prime mover. This muscle contracts primarily to produce particular movement such as extending the forearm. So, this muscle initiates movement.

Hence, option b. is correct.

Reasons for the incorrect statements:

Option a. is given as “It opposes the function of the prime mover”. Antagonist muscle is a type of muscle that opposes function of the prime mover. Hence, option a. is incorrect

Option c. is given as “Its function primarily to stabilize the joint”. Antagonist stabilizes the joint. Hence, option c. is incorrect.

Option d. is given as “Its muscle fibers are always circular in structure”. Agonist is a type of muscle which only provides shape to muscle. Hence, option d. is incorrect.

Hence, options a., c., and d. are incorrect.

Conclusion

Agonist is a muscle and is also called prime mover as it contracts to initiate the movement of muscles.

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Which statement is accurate about an agonist? a. It opposes the function of the prime mover. b. It is the primary muscle that produces a movement. c. It functions primarily to stabilize a joint. d. Its muscle fibers are always circular in structure.
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Chapter 11 Solutions

A+P LAB MANUAL +CONNECT ACCESS UPDT

Ch. 11.3 - List the four suprahyoid muscles, and describe a...Ch. 11.3 - Which neck muscles extend the neck? Which neck...Ch. 11.4 - Which muscles form the erector spinae, and what...Ch. 11.5 - Prob. 14WDYLCh. 11.5 - How is the diaphragm involved in respiration?Ch. 11.6 - What are the main actions of the abdominal...Ch. 11.7 - Prob. 17WDYLCh. 11.8 - Prob. 18WDYLCh. 11.8 - Prob. 19WDYLCh. 11.8 - Identify the rotator cuff muscles, and describe...Ch. 11.8 - What are the muscles in the anterior compartment...Ch. 11.8 - Prob. 22WDYLCh. 11.8 - Prob. 23WDYLCh. 11.8 - What muscles in the posterior compartment move the...Ch. 11.8 - Prob. 25WDYLCh. 11.9 - Prob. 26WDYLCh. 11.9 - Prob. 27WDYLCh. 11.9 - Prob. 28WDYLCh. 11.9 - Prob. 29WDYLCh. 11 - _____ 1. Which statement is true about an agonist?...Ch. 11 - Prob. 2DYKBCh. 11 - _____ 3. When this large muscle contracts, the...Ch. 11 - Prob. 4DYKBCh. 11 - _____ 5. Each of these muscles can flex the...Ch. 11 - _____ 6. The dorsal interossei muscles in the hand...Ch. 11 - Prob. 7DYKBCh. 11 - Prob. 8DYKBCh. 11 - Prob. 9DYKBCh. 11 - Prob. 10DYKBCh. 11 - Prob. 11DYKBCh. 11 - Which muscles of facial expression do you use to...Ch. 11 - Distinguish between suprahyoid and infrahyoid...Ch. 11 - What is the effect of contracting the abdominal...Ch. 11 - What movements are possible at the glenohumeral...Ch. 11 - Identify the compartments of the arm (brachium),...Ch. 11 - Prob. 17DYKBCh. 11 - Prob. 18DYKBCh. 11 - What leg muscles allow a ballet dancer to rise up...Ch. 11 - Which muscles are responsible for foot inversion?Ch. 11 - Prob. 1CALCh. 11 - Prob. 2CALCh. 11 - Prob. 3CALCh. 11 - Prob. 4CALCh. 11 - Prob. 5CALCh. 11 - Prob. 1CSLCh. 11 - While training on the balance beam, Pat slipped...Ch. 11 - Prob. 3CSLCh. 11 - Why is it more difficult for Eric to lift a heavy...
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