Given these events:(1) Acetylcholine is broken down into acetic acid and choline.(2) Acetylcholine diffuses across the synaptic cleft.(3) An action potential reaches the terminal branch of the motor neuron.(4) Acetylcholine combines with a ligand-gated ion channel.(5) An action potential is produced on the muscle fiber’s plasma membrane.Choose the arrangement that lists the events in the order they occur ata neuromuscular junction.a. 2,3,4,1,5 c. 3,4,2,1,5 e. 5,1,2,4,3b. 3,2,4,5,1 d. 4,5,2,1,3

Given these events:(1) Acetylcholine is broken down into acetic acid and choline.(2) Acetylcholine diffuses across the synaptic cleft.(3) An action potential reaches the terminal branch of the motor neuron.(4) Acetylcholine combines with a ligand-gated ion channel.(5) An action potential is produced on the muscle fiber’s plasma membrane.Choose the arrangement that lists the events in the order they occur ata neuromuscular junction.a. 2,3,4,1,5 c. 3,4,2,1,5 e. 5,1,2,4,3b. 3,2,4,5,1 d. 4,5,2,1,3

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 11RE

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Similar questions

What is a motor unit? Why does a rapid series of muscle twitches yield a stronger overall contraction than a single twitch?
What is the function of the sarcoplasmic reticulum in muscle cell contraction?
Why is it important to remove acetylcholine from its binding to acetylcholine receptors once the neural stimulus ends? What can be the possible consequence of the non-removal of acetylcholine to the skeletal muscle fiber?
Motor neurons release what type of neurotransmitter onto the motor end plate of skeletal muscles? What effect does this neurotransmitter have on the postsynaptic membrane?
Describe 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?
If ACh channels are opened on a muscle fiber that is held at +55 mV, which ion moves predominantly? In which direction does this ion move across the muscle cell membrane?
Why will an increase in the strength of a stimulus cause an increase in the force of contraction in a whole muscle but not in a single muscle fiber?
During a single muscle twitch, the sarcomeres within a muscle contract maximally. How can you explain the difference in the force generated (and the amount of finger movement) when only the frequency was increased?
In the process called "excitation-contraction coupling" (the events that lead up to a muscle cell's contraction), what part of this process is disrupted by death? (Actually, all of it is disrupted by death, but we can pinpoint a linkage between death, and the onset of rigor mortis--as well as explaining why rigor mortis eventually ends.)
How does an event (action potential) on the outside of a muscle fiber trigger the contractile process on the inside?
Which of the following would be recruited in a muscle stimulation when contractile strength increases? A) Many small motor units with the ability to stimulate other motor units B) Motor units with the longest muscle fibers C) Motor units with larger, less excitable neurons D) Large motor units with small, highly excitable endurance
Which of the following step(s) about the excitation of skeletal muscle is/are incorrect? 1. Acetylcholine is released and binds to motor end plate receptors 2. An action potential is created and moves down T-tubules 3. Calcium is released from the sarcoplasmic reticulum 4. Calcium ions bind to tropomyosin to shift troponin off the binding sites for cross-bridging 5. Myosin forms cross-bridges and binds with actin to pull it towards middle of sarcomere