Campbell Biology
12th Edition
ISBN: 9780135188743
Author: Urry
Publisher: PEARSON
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Chapter 50.5, Problem 1CC
Contrast the role of Ca2+ in the contraction of a skeletal muscle fiber and a smooth muscle cell.
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Contrast the role of Ca2+in the contraction of a skeletalmuscle fiber and a smooth muscle cell.
Describe the regulation of smooth muscle contraction by intracellular calcium and how cross-bridge cycling is terminated when calcium decreases again.
Discuss the similarities and differences by which Ca2+ activity is involved in initiating muscle contraction in skeletal versus smooth muscle fibers (hint: include Ca2+ sources, proteins it binds to, and signaling cascade it activates leading to contraction). (please explain in sentences, max 12 sentences)
Chapter 50 Solutions
Campbell Biology
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Ch. 50.3 - Prob. 4CCCh. 50.4 - Explain why some taste receptor cells arid all...Ch. 50.4 - Prob. 2CCCh. 50.4 - Prob. 3CCCh. 50.5 - Contrast the role of Ca2+ in the contraction of a...Ch. 50.5 - Prob. 2CCCh. 50.5 - Prob. 3CCCh. 50.6 - Contrast swimming and flying in terms of the main...Ch. 50.6 - MAKE CONNECTIONS. Peristalsis contributes to the...Ch. 50.6 - WHAT IF? When using your arms to lower yourself...Ch. 50 - Sensory receptors transduce stimulus energy and...Ch. 50 - How are music volume and pitch encoded in signals...Ch. 50 - Prob. 50.3CRCh. 50 - Prob. 50.4CRCh. 50 - What are two major functions of ATP hydrolysis in...Ch. 50 - Which of the following sensory receptors is...Ch. 50 - The middle ear converts (A) air pressure waves to...Ch. 50 - Prob. 2TYUCh. 50 - Prob. 3TYUCh. 50 - Prob. 4TYUCh. 50 - Although some sharks close their eyes just before...Ch. 50 - Prob. 6TYUCh. 50 - EVOLUTION CONNECTION In general, locomotion on...Ch. 50 - Prob. 8TYUCh. 50 - WRITE ABOUT A THEME: ORGANIZATION In a short essay...Ch. 50 - SYNTHESIZE YOUR KNOWLEDGE Bloodhounds, which are...Ch. 50 - If an egg rolls out of the nest, a mother greylag...
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- Contraction of both skeletal and smooth muscle is triggered by an increase in cytosolic Ca2+. Compare the mechanisms by which each type of muscle converts a rise in Ca2+ concentration into contraction.arrow_forwardDescribe the protein structures involved in muscle contraction. Illustratearrow_forwardDescribe the sequence of events by which an action potential in a motor neuron produces an action potential in the plasma membrane of a skeletal muscle fiber?arrow_forward
- Describe the functions of skeletal muscle proteins.arrow_forwardExplain how the process of skeletal muscle excitation–contraction coupling demonstrates the general principle of physiology that controlled exchange of materials occurs between compartments and across cellular membranes.arrow_forwardDefine what the NMJ is and why it's important for muscle contraction. Explain in short the process of the NMJ signaling the muscle to contract. Note the difference between a motor unit and the NMJ.arrow_forward
- In order to study and understand muscle diseases, one needs to have a good understanding of normal muscle function. Briefly outline the process of cross-bridge cycling in muscle contraction. Be sure to highlight the role of Ca2+ and ATP/ADP in the process.arrow_forwardDiscuss the sequence of events between a Motor Neuron Action Potential and Skeletal Muscle Fiber Contraction?arrow_forwardIllustrate and describe the fine structure (electron micrograph) of a skeletal muscle fiber.arrow_forward
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