Fundamentals of Anatomy and Physiology (Package)
10th Edition
ISBN: 9780134566979
Author: Martini
Publisher: PEARSON
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Textbook Question
Chapter 10, Problem 4RQ
The detachment of the myosin cross-bridges is directly triggered by (a) the repolarization of T tubules, (b) the attachment of ATP to myosin heads, (c) the hydrolysis of ATP, (d) calcium ions.
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Chapter 10 Solutions
Fundamentals of Anatomy and Physiology (Package)
Ch. 10 - Prob. 1CPCh. 10 - Identify the primary functions of skeletal muscle.Ch. 10 - Describe the three connective tissue layers...Ch. 10 - Prob. 4CPCh. 10 - Prob. 5CPCh. 10 - Prob. 6CPCh. 10 - Prob. 7CPCh. 10 - Prob. 8CPCh. 10 - How would a drug that blocks acetylcholine release...Ch. 10 - What would happen to a resting skeletal muscle if...
Ch. 10 - Prob. 11CPCh. 10 - Why does a muscle that has been overstretched...Ch. 10 - Can a skeletal muscle contract without shortening?...Ch. 10 - Prob. 14CPCh. 10 - Prob. 16CPCh. 10 - Prob. 17CPCh. 10 - Describe muscle fatigue.Ch. 10 - Why would a sprinter experience muscle fatigue...Ch. 10 - Prob. 19CPCh. 10 - Prob. 20CPCh. 10 - Prob. 21CPCh. 10 - Prob. 22CPCh. 10 - Prob. 23CPCh. 10 - Prob. 24CPCh. 10 - Prob. 25CPCh. 10 - Prob. 1RQCh. 10 - The connective tissue coverings of a skeletal...Ch. 10 - Prob. 3RQCh. 10 - The detachment of the myosin cross-bridges is...Ch. 10 - A muscle producing near-peak tension during rapid...Ch. 10 - The type of contraction in which the tension...Ch. 10 - Prob. 7RQCh. 10 - Prob. 8RQCh. 10 - List the three types of muscle tissue in the body.Ch. 10 - What three layers of connective tissue are part of...Ch. 10 - Prob. 11RQCh. 10 - Prob. 12RQCh. 10 - What five interlocking steps are involved in the...Ch. 10 - Prob. 14RQCh. 10 - Prob. 15RQCh. 10 - Prob. 16RQCh. 10 - Prob. 17RQCh. 10 - Prob. 18RQCh. 10 - Prob. 19RQCh. 10 - Prob. 20RQCh. 10 - Prob. 21RQCh. 10 - Prob. 22RQCh. 10 - Prob. 23RQCh. 10 - Prob. 24RQCh. 10 - Prob. 25RQCh. 10 - Explain why a murder victims time of death can be...Ch. 10 - Which of the following activities would employ...Ch. 10 - Many potent insecticides contain toxins, called...Ch. 10 - Prob. 29RQCh. 10 - Prob. 30RQCh. 10 - How would a drug that inhibits AChE make a...Ch. 10 - Would myasthenia gravis affect Rhettas heart...
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- What prevents cross-bridges from attaching to sites on the thinfilaments in a resting skeletal muscle?arrow_forwardWhat would happen if ATP suddenly were not available after the sarcomere had started to shorten?arrow_forwardDo all three types of muscle: smooth, skeletal, and cardiac use cross bridges for movement of muscles? What about tropinoin and tropomysin? Is it only skeletal and cardiac that utilize these specific myosin and actin components?arrow_forward
- Even though calcium is removed from troponin and tropomyosin, please describe in detail what else needs to happen to allow our muscle fibers to relax and not stay contracted?arrow_forwardMuscle relaxation occurs when ________. a. calcium ions are actively transported out of the sarcoplasmic reticulum b. calcium ions diffuse out of the sarcoplasmic reticulum c. calcium ions are actively transported into the sarcoplasmic reticulum d. calcium ions diffuse into the sarcoplasmic reticulumarrow_forwardWhich item is biggest? A. myosin head B. myofibril C. troponin D. sarcomerearrow_forward
- What is the role of ATP and ATP hydrolysis in the cycle of actin-myosin association and disassociation that leads to muscle contraction?arrow_forwardFor relaxation to occur, A. calcium leaves the sarcoplasmic reticulum, and troponin binds calcium and blocks the binding sites on actin. B. calcium enters the myofibril, it detaches from myosin, and the binding sites on myosin become inactive. C. sarcoplasm calcium levels fall, calcium is removed from troponin, and tropomyosin blocks binding sites on actin. D. extracellular calcium levels fall, calcium is pumped into the myofibril, and tropomyosin slides away from actin.arrow_forwardwhat is a myofibrilarrow_forward
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