EBK ANATOMY & PHYSIOLOGY
5th Edition
ISBN: 9780321888013
Author: Hoehn
Publisher: VST
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Textbook Question
Chapter 9, Problem 17RQ
(a) Describe the structure of a sarcomere and indicate the relationship of the sarcomere to myofilaments. (b) Explain the sliding filament model of contraction using appropriately labeled diagrams of a relaxed and a contracted sarcomere.
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(a) Describe the structure of a sarcomere and indicate the relationship of the sarcomere to myofilaments. (b) Explain the sliding filament model of contraction using appropriately labeled diagrams of a relaxed and a contracted sarcomere.
Explain the sliding filament theory of contraction by drawing and labeling a relaxed and a contracted sarcomere.
Given these events:(1) The sarcoplasmic reticulum releases Ca2+.(2) The sarcoplasmic reticulum takes up Ca2+.(3) Calcium ions diffuse into the sarcoplasm.(4) An action potential moves down the T tubule.(5) The sarcomere shortens.(6) The muscle relaxes.Choose the arrangement that lists the events in the order they occurfollowing a single stimulation of a skeletal muscle fiber.a. 1,3,4,5,2,6 c. 4,1,3,5,2,6 e. 5,1,4,3,2,6b. 2,3,5,4,6,1 d. 4,2,3,5,1,6
Chapter 9 Solutions
EBK ANATOMY & PHYSIOLOGY
Ch. 9 - When describing muscle, what does striated mean?Ch. 9 - Prob. 2CYUCh. 9 - How does the term epimysium relate to the role and...Ch. 9 - Which myofilaments have binding sites for calcium?...Ch. 9 - Which region or organelle-cytosol, mitochondrion,...Ch. 9 - What are the three structural components of a...Ch. 9 - What is the final trigger for contraction? What is...Ch. 9 - What prevents the filaments from sliding back to...Ch. 9 - What would happen if a muscle fiber suddenly ran...Ch. 9 - What is a motor unit?
Ch. 9 - What is happening in the muscle during the latent...Ch. 9 - Prob. 12CYUCh. 9 - When Eric returned from jogging, he was breathing...Ch. 9 - List two factors that influence contractile force...Ch. 9 - Prob. 15CYUCh. 9 - How do aerobic and resistance exercise differ in...Ch. 9 - Compare the structures of skeletal and smooth...Ch. 9 - Calcium is the trigger for contraction of all...Ch. 9 - How does the stress-relaxation response suit the...Ch. 9 - The connective tissue covering that encloses the...Ch. 9 - Prob. 2RQCh. 9 - Prob. 3RQCh. 9 - Prob. 4RQCh. 9 - Prob. 5RQCh. 9 - Contraction elicited by a single brief stimulus is...Ch. 9 - A smooth, sustained contraction resulting from...Ch. 9 - Characteristics of isometric contractions include...Ch. 9 - During muscle contraction, ATP is provided by (a)...Ch. 9 - The neurotransmitter released by somatic motor...Ch. 9 - The ions that enter the skeletal muscle cell...Ch. 9 - Myoglobin has a special function in muscle tissue....Ch. 9 - 13. Aerobic exercise results in all of the...Ch. 9 - The smooth muscle type found in the walls of...Ch. 9 - Name and describe the four special functional...Ch. 9 - Distinguish between (a) direct and indirect muscle...Ch. 9 - (a) Describe the structure of a sarcomere and...Ch. 9 - What is the importance of acetylcholinesterase in...Ch. 9 - Explain how a slight (but smooth) contraction...Ch. 9 - Explain what is meant by the term...Ch. 9 - Define and draw a motor unit.Ch. 9 - Describe the three distinct types of skeletal...Ch. 9 - True or false: Most muscles contain a predominance...Ch. 9 - Describe some cause(s) of muscle fatigue and...Ch. 9 - Define EPOC.Ch. 9 - Smooth muscle has some unique properties, such as...Ch. 9 - Lets continue our tale of Mrs. DeStephanos medical...Ch. 9 - Lets continue our tale of Mrs. DeStephanos medical...Ch. 9 - Lets continue our tale of Mrs. DeStephanos medical...Ch. 9 - Lets continue our tale of Mrs. DeStephanos medical...
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- In the diagram below, label the fine structure of a muscle, down to one of its myofibrils. Identify the basic unit of contraction in a myofibril.arrow_forwardFigure 13.22 To what structures in a skeletal muscle are the endoneurium, perineurium, and epineurium comparable? Figure 13.22 Close-Up of Nerve Trunk Zoom in on this slide of a nerve trunk to examine the endoneurium, perineurium, and epineurium in greater detail (tissue source: simian). LM × 1600. (Micrograph provided by the Regents of University of Michigan Medical School © 2012)arrow_forward(a) Describe the roles of ATP in the sliding filament mechanism of skeletal muscle contraction. (b) Describe the basic sequence of events that occurs as an action potential arrives at the neuromuscular junction and is transmitted to the muscle cell for contraction.arrow_forward
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