Life: The Science of Biology
11th Edition
ISBN: 9781319010164
Author: David E. Sadava, David M. Hillis, H. Craig Heller, Sally D. Hacker
Publisher: W. H. Freeman
expand_more
expand_more
format_list_bulleted
Videos
Question
Chapter 47.2, Problem 1R
Summary Introduction
To review:
The mechanism, by which force generation in a muscle is controlled by nervous system, based on the relationships between skeletal muscles and motor neurons.
Introduction:
The acetylcholine is a neurotransmitter released by motor neurons to activate the muscles. At the neuromuscular junction, the acetylcholine is released from the presynaptic neuron membrane and bind to the receptors present on the postsynaptic muscle membrane.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
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 functions of gamma motor neurons and explain why they are stimulated at the same time as alpha motor neurons during voluntary muscle contractions.
If ligand-gated K+ channels were to open in an unstimulated muscle fiber,how would this affect the resting membrane potential?
Chapter 47 Solutions
Life: The Science of Biology
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- What is a motor unit? Why does a rapid series of muscle twitches yield a stronger overall contraction than a single twitch?arrow_forwardWhat are the functional zones of a motor neuron?arrow_forwardIn theory, could a muscle cell get away with having only acetylcholine-gated cation channels, which would serve the dual purpose of receiving neurotransmitter signals and propagating action potentials? Why or why not?arrow_forward
- 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?arrow_forwardIn your own words, describe the main events occurring between the arrivalof an action potential at a motor neuron end plate and contraction of thecorresponding muscle. Use 250 words or less.arrow_forwardDischarge from muscle spindles could be increased by all the following, except :-a- increased α-motor neuron dischargeb- increased γ-motor neuron dischargec- stretch of the intrafusal muscle fibersd- stretch of the extrafusal muscle fibersarrow_forward
- The single-fiber twitch experiments shown here were generated by stimulating the muscle cell membranes to threshold with an electrode and measuring the resulting action potential and force. How would the results differ if Ca21 were removed from the extracellular solution just before the electrical stimulus was applied?arrow_forwardWhich role do gamma (γ) motor neurons play in the function of a muscle spindle? Select one: a. They improve the accuracy of the reported sensory information by innervating intrafusal fibers b. They enhance the force of muscle contraction by innervating intrafusal fibers c. They coordinate the contraction of extrafusal and intrafusal fibers d. They improve the accuracy of the reported sensory information by innervating extrafusal fibers e. They enhance the force of muscle contraction by innervating extrafusal fibersarrow_forwardDescribe 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?arrow_forward
- List the 3 major classes of motor proteins:arrow_forwardDescribe motor control in terms of the conceptual motor control hierarchy. Use the following terms: highest, middle, and local levels; motor program; descending pathways; and motor neuron?arrow_forwardIn light of the “all or none” law of muscle contraction, how can you explain twitch recruitment (also called the graded response) when stimulating the muscle versus stimulating the nerve? Explain the difference in stimulation voltage required to elicit a maximum response when stimulating the nerve versus the muscle directly?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Human Physiology: From Cells to Systems (MindTap ...BiologyISBN:9781285866932Author:Lauralee SherwoodPublisher:Cengage Learning
Human Biology (MindTap Course List)BiologyISBN:9781305112100Author:Cecie Starr, Beverly McMillanPublisher:Cengage Learning
Human Physiology: From Cells to Systems (MindTap ...
Biology
ISBN:9781285866932
Author:Lauralee Sherwood
Publisher:Cengage Learning
Human Biology (MindTap Course List)
Biology
ISBN:9781305112100
Author:Cecie Starr, Beverly McMillan
Publisher:Cengage Learning
Nervous System - Get to know our nervous system a bit closer, how does it works? | Neurology; Author: FreeMedEducation;https://www.youtube.com/watch?v=6O-0CVAgaEM;License: Standard youtube license