Match the following (with reference to skeletal muscle):1. Ca2. T tubule3. ATP4. lateral sacs ofthe sarcoplasmic (c) supplies energy for the(a) cyclically binds with themyosin cross bridgesduring contraction(b) has ATPase activityreticulum5. myosin6. troponin-tropomyosincomplex7. actinpower stroke of a crossbridge(d) rapidly transmits the ac-tion potential to thecentral portion of themuscle fiber(e) stores Ca(f) pulls the troponin-tropomyosin complexout of its blockingposition(8) prevents actin from in-teracting with myosinwhen the muscle fiber isnot excited||

Muscle contraction begins when the impulse arrives at a particular muscle which is going to be…

2 T tubule 3. ATP 4. lateral sacs of the sarcoplasmic (c) supplies energy for the reticulum 5. myosin 6. troponin- myosin cross bridges during contraction (b) has ATPase activity power stroke of a cross bridge (d) rapidly transmits the ac- tion potential to the central portion of the muscle fiber (e) stores Ca (f) pulls the troponin- trapomyosin complex out of its blocking tropomyosin complex 7. actin position

2 T tubule 3. ATP 4. lateral sacs of the sarcoplasmic (c) supplies energy for the reticulum 5. myosin 6. troponin- myosin cross bridges during contraction (b) has ATPase activity power stroke of a cross bridge (d) rapidly transmits the ac- tion potential to the central portion of the muscle fiber (e) stores Ca (f) pulls the troponin- trapomyosin complex out of its blocking tropomyosin complex 7. actin position

Human Physiology: From Cells to Systems (MindTap Course List)

9th Edition

ISBN:9781285866932

Author:Lauralee Sherwood

Publisher:Lauralee Sherwood

Chapter8: Muscle Physiology

Section: Chapter Questions

Problem 12RE

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Similar questions

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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.
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Figure 38.37 Which of the following statements about muscle contraction is true? The power stroke occurs when ATP is hydrolyzed to ADP and phosphate. The power stroke occurs when ADP and phosphate dissociate from the myosin head. The power stroke occurs when ADP and phosphate dissociate from the actin active site. The power stroke occurs when Ca2+ binds the calcium head.
Every skeletal muscle fiber is supplied by a motor neuron at the NMJ. Watch this video (http://openstaxcollege.org/l/skelmuscfiber) to learn more about what happens at the neuromuscular junction. (a) What is the definition of a motor unit? (b) What is the structural and functional difference between a large motor unit and a small motor unit? Can you give an example of each? (c) Why is the neurotransmitter acetylcholine degraded after binding to its receptor?
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