Basic Biomechanics
7th Edition
ISBN: 9780073522760
Author: Susan J Hall
Publisher: McGraw-Hill Education
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Question
Chapter 6, Problem 2IP
Summary Introduction
To list: Five movement skills with rationales for each movement skills for which a high percentage of fast-twitch fibers is an asset and five movement skills with rationales for each movement skills for which a high percentage of slow-twitch fibers is an asset.
Concept introduction: The muscle fibers contain bundles of myofibrils that are arranged in parallel along with the longitudinal axis. They also include myofibrils, muscle membrane, sarcoplasm, sarcotubular system, and mitochondria. There are two types of muscle fibers that are type I and type II.
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- What is a motor unit? Why does a rapid series of muscle twitches yield a stronger overall contraction than a single twitch?arrow_forwardYou are training athletes for the 100-meter dash. They need muscles specialized for speed and strength, not endurance. What muscle characteristics would your training regimen aim to develop? How would you alter it to train a long-distance swimmer?arrow_forwardIn a general sense, how do skeletal muscles produce movement?arrow_forward
- Figure 38.37 Which of the following statements about muscle contraction is true? The power stroke occurs when ATP is hydrolyzed to ADP and phosphate. The power stroke occurs when ADP and phosphate dissociate from the myosin head. The power stroke occurs when ADP and phosphate dissociate from the actin active site. The power stroke occurs when Ca2+ binds the calcium head.arrow_forwardWhich muscle pair plays a role in respiration? intertransversarii, interspinales semispinalis cervicis, semispinalis thoracis trapezius, rhomboids diaphragm, scalenearrow_forwardWhich arrangement best describes a bipennate muscle? The muscle fibers feed in on an angle to a long tendon from both sides. The muscle fibers feed in on an angle to a long tendon horn all directions. The muscle fibers feed in on an angle to a long tendon horn one side. The muscle fibers on one side of a tendon feed into it at a certain angle and muscle fibers on the other side of the tendon feed into it at the opposite angle.arrow_forward
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