Anatomy & Physiology
5th Edition
ISBN: 9780321861580
Author: Marieb, Elaine N.
Publisher: Pearson College Div
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Textbook Question
Chapter 9, Problem 18RQ
What is the importance of acetylcholinesterase in muscle cell contraction?
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What is the importance of acetylcholinesterase in muscle cell contraction?
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Chapter 9 Solutions
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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- What is the time relationship between a skeletal muscle fiber action potential and the resulting contraction and relaxation of the muscle fiber?arrow_forwardDescribe the protein structures involved in muscle contraction.arrow_forwardWhat are the Regulatory Molecules that mediate exercise-induced changes in muscle?arrow_forward
- What is the function of myosin light-chain kinase in smooth muscle?arrow_forwardWhat happens if there’s a sufficient supply of ATP in muscle contraction?arrow_forwardSkeletal muscle cells undergo contractions based on a molecular mechanism involving: 1)the sliding of actin and myosin filaments past each other without any change in filament length 2) the shortening of actin filaments following direct interaction with myosin 3) dynamic instability of microtubules 4)nonearrow_forward
- What is the difference between a single cross-bridge power stroke and a single twitch of a skeletal muscle fiber?arrow_forwardIn skeletal muscle contraction, calcium ions apparently act to: Question 8 options: a) block the channels of the voltage gated sodium channels b) move the tropomyosin so it’s no longer blocking the active sites of the actin c) release the inhibition on Z discs d) cause ATP binding to actinarrow_forwardWhat factors determine the duration of an isotonic twitch in skeletal muscle? An isometric twitch?arrow_forward
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