Z331 Fall 2010 Ecampus Week 5 Contraction Cycle Posted

Z331 Fall 2010 Ecampus Week 5 Contraction Cycle Posted -...

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Week 5: Lecture 4: Chapter 10 –   Muscular Tissue: Contraction Cycle
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Table 10-1, part 1, p. 299 A Preview/Review of Muscle Contraction **See Table 10-1, p. 299**
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Skeletal Muscle  Contraction –  Sliding filament  theory 6 Participants: Actin Myosin Troponin Tropomyosin ATP Ca 2+ Figure 10–9, 293
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Sarcomere  Shortening Sarcomere –  contractile unit of  skeletal muscle Sliding filament  theory: thin filaments of  sarcomere slide  toward M line  between thick  filaments Z lines move closer  together Fig. 10-6 & 10-8, 290 & 292
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Sherwood,  6 th  ed., fig. 8- Netter, 3-4
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- Myofibril A band Z disk Z disk Z disk I band M line H zone Z disk Sarcomere Thin filaments Tropomyosin Troponin Actinchain G-actinmolecule Myosin tail Myosin heads Myosin molecule (c) (d) (e) Thick filaments Hinge region (f) Titin Nebulin Titin M line M line Silverthorn, 4 th  ed., fig.  12.3 (similar to 10-7, 
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Z331 Fall 2010 Ecampus Week 5 Contraction Cycle Posted -...

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