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EBK BASIC BIOMECHANICS
7th Edition
ISBN: 8220100409455
Author: Hall
Publisher: MCG
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Question
Chapter 7, Problem 3AP
Summary Introduction
To identify: The sequence of movements that occur at shoulder, elbow, and wrist joints during execution of fore-hand and back hand strokes in a racket sport.
Concept introduction: The musculoskeletal system of the body is composed of skeleton (bones and joint) and the soft tissues (skeletal muscles, ligaments and tendons). The attachment site of two or more bones is known as a joint or an articulation. The function of the joints is to provide stability and mobility to the skeleton. Joint flexibility is the ability to move joints or group of joints in a complete range of motion.
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To demonstrate muscle fatigue, a student held an 8 lb dumbbell in her hand and abducted her arm parallel to the floor. After 45 seconds, she has having difficulty holding that position so she rotated her hand 90 degrees. This allowed her to hold the dumbbell in position for an additional 20 seconds. Which of the following is the best explanation for this?
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Chapter 7 Solutions
EBK BASIC BIOMECHANICS
Ch. 7 - Construct a chart listing all muscles crossing the...Ch. 7 - Prob. 2IPCh. 7 - Prob. 3IPCh. 7 - INTRODUCTORY PROBLEMS 4. List the muscles that...Ch. 7 - INTRODUCTORY PROBLEMS 5. List the muscles used as...Ch. 7 - INTRODUCTORY PROBLEMS 6. Explain how the use of an...Ch. 7 - INTRODUCTORY PROBLEMS 7. Select a familiar...Ch. 7 - 8. Using the diagram in Sample Problem 7.1 as a...Ch. 7 - 10. Solve Sample Problem 7.2 with the addition of...Ch. 7 - Identify the sequence of movements that occur at...
Ch. 7 - Which muscles are most likely to serve as agonists...Ch. 7 - Prob. 3APCh. 7 - ADDITIONAL PROBLEMS 4. Which muscles are most...Ch. 7 - Prob. 5APCh. 7 - Prob. 6APCh. 7 - 8. How much tension (Fm) must be supplied by the...Ch. 7 - 9. What is the length of the moment arm between...Ch. 7 - Prob. 10AP
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