Which of the following is the correct sequence of events in the initiation of contraction of a skeletal muscle fiber? Conformational Change in Troponin-Tropomyosin Complex Depolarization of Sarcolemma 1 2 3 4 5 25523 Release of Ca²+ from Sarcoplasmic Reticulum 3 4 2 4 Propagation into Transverse Tubules 4 3 4 3 Acetylcholine Binding to Receptors 5 2

Which of the following is the correct sequence of events in the initiation of contraction of a skeletal muscle fiber? Conformational Change in Troponin-Tropomyosin Complex Depolarization of Sarcolemma 1 2 3 4 5 25523 Release of Ca²+ from Sarcoplasmic Reticulum 3 4 2 4 Propagation into Transverse Tubules 4 3 4 3 Acetylcholine Binding to Receptors 5 2

Human Biology (MindTap Course List)

11th Edition

ISBN:9781305112100

Author:Cecie Starr, Beverly McMillan

Publisher:Cecie Starr, Beverly McMillan

Chapter6: The Muscular System

Section: Chapter Questions

Problem 6SQ: Nerve impulses first stimulate a skeletal muscle fiber at _______. a. T tubules b. sarcomeres c....

See similar textbooks

Similar questions

What is the function of the sarcoplasmic reticulum in muscle cell contraction?
Nerve impulses first stimulate a skeletal muscle fiber at _______. a. T tubules b. sarcomeres c. neuromuscular junctions d. actin binding sites
The muscle relaxes if no new nerve signal arrives. However the neurotransmitter from the previous stimulation is still present in the synapse The activity of helps to remove this neurotransmitter. myosin action potential tropomyosin acetylcholinesterase
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?