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Chapter 12, Problem 35RQ

a.

Summary Introduction

To determine: The force that the bicep would generate when the distance of the fulcrum from the arm is 4 cm and the angle at which the arm must be held constant is 90°.

Introduction: The contraction and relaxation of the muscle cells are responsible for the movement of a particular part of the body. The amount of pressure generated depends on the number of sarcomere units that slide over. Greater the force required, more will be the muscle fibers that slide over one another.

Summary Introduction

To compare: The force needed when the point of insertion is 5 cm from the fulcrum to the force obtained when the distance of the fulcrum from the arm is 4 cm.

Introduction: The movement of the body is controlled by the contraction and relaxation of the skeletal muscles. A unit of muscle cells that undergoes contraction and relaxation is called sarcomere. The sarcomere is responsible for providing a striated appearance

b.

Summary Introduction

To determine: The force generated by the bicep when a band weighing 7kg is added on to the risk.

Introduction: Contraction in the muscle is important during weightlifting and the amount of force generated depends on the numbers of sarcomere units that slide over one another. Greater the force more will be the muscle fibers required that slide over one another.

Summary Introduction

To Compare: The force generated by the bicep when a band weighing 7kg is added on to the risk with the force if the object is placed 25cm away from the fulcrum.

Introduction: The force required to lift an object is directly proportional to the distance of the weight from the fulcrum and it is also dependent angle at which the weight has to be made stable.

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Chapter 12 Solutions

Human Physiology: An Integrated Approach Plus Mastering A&P with Pearson eText -- Access Card Package (8th Edition) (What's New in Human Physiology)

Ch. 12.1 - Prob. 11CCCh. 12.1 - Prob. 12CCCh. 12.1 - Prob. 13CCCh. 12.1 - According to the convention for naming enzymes,...Ch. 12.1 - Prob. 15CCCh. 12.1 - Prob. 16CCCh. 12.1 - Summation in muscle fibers means that the...Ch. 12.1 - Prob. 18CCCh. 12.1 - Which type of runner would you expect to have more...Ch. 12.1 - What is the response of a muscle fiber to an...Ch. 12.1 - Prob. 21CCCh. 12.2 - One study found that many world-class athletes...Ch. 12.3 - What is the response of a muscle fiber to an...Ch. 12.3 - Prob. 24CCCh. 12.3 - Prob. 25CCCh. 12.3 - Prob. 26CCCh. 12.3 - Prob. 27CCCh. 12.3 - Prob. 28CCCh. 12.3 - What happens to contraction if a smooth muscle is...Ch. 12.3 - Prob. 30CCCh. 12.3 - Prob. 31CCCh. 12.3 - Prob. 32CCCh. 12.3 - How can a neuron alter the amount of...Ch. 12.3 - Prob. 34CCCh. 12.3 - 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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