how a neuron can repair itself. What increases the likelihood of repair; what decreases the likelihood of repair? If repair is not possible, what other options are possible to innervate the effector organ?

how a neuron can repair itself. What increases the likelihood of repair; what decreases the likelihood of repair? If repair is not possible, what other options are possible to innervate the effector organ?

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter39: Information Flow And The Neuron

Section: Chapter Questions

Problem 7TYK: Which of the following does not contribute to propagation of action potentials? a. As the area...

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Concept explainers

Tissue regeneration & repair

Tissue regeneration involves the restoration of tissue components by regrowth of damaged tissues. In contrast, tissue repair involves patching of injured tissue rather than restoring it. It is the proliferative capacity of the cells that decides the amount of regeneration against the repair that would occur in the tissue. Both regeneration and repair depending on the duration of the injury and response to the inflammation.

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Explain in few sentences !! how a neuron can repair itself. What increases the likelihood of repair; what decreases the likelihood of repair? If repair is not possible, what other options are possible to innervate the effector organ?

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In one to two sentences ... Explain how a neuron can repair itself. What increases the likelihood of repair; what decreases the likelihood of repair? If repair is not possible, what other options are possible to innervate the effector organ?
Given the steps shown below, which of the following is the correct sequence for transmission at a chemical synapse? 1. neurotransmitter binds with receptor 2. sodium ions rush into neuron's cytoplasm 3. action potential depolarizes the presynaptic membrane 4. ion channel opens to allow particular ion to enter cell 5. synaptic vesicles release neurotransmitter into the synaptic cleft O 1, 2, 3, 4, 5 O 5, 1, 2, 4, 3 O 2, 3, 5, 4, 1 O4, 3, 1, 2, 5 O 3, 2, 5, 1, 4
Which of the following does not contribute to propagation of action potentials? a. As the area outside the membrane becomes negative, itattracts ions from adjacent regions; as the inside of the membrane becomes positive, it attracts negative ions from nearby in the cytoplasm. These events depolarize nearby regions of the axon membrane. b. The refractory period allows the impulse to travel in only one direction. c. Each segment of the axon prevents the adjacent segments from firing. d. The magnitude of the action potential stays the same as it travels down the axon. e. Up to a limit, increasing the intensity of the stimulus increases the number of action potentials.
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repeatedly stimulated, and recordings are made of the response. What effect would you expect to observe? Hint: think 3) What response would you predict in a post-synaptic cell in the above situation? Follow directions and answer the following questions: A drug that blocks ATPase enzymes (enzymes that hydrolyze ATP) is introduced into a neuron. The neuron is then 1) What is the effect of AP frequency on the amount of transmitter released at the terminal? Activity 8: Synaptic Transmission at Axon Termines Apply Your Knowledge of the role of the Na+/K+ ATPase in the physiology of a neuron.
What is the difference between an action potential and a synapse? (select all that apply) The action potential moves down the axon and a synapse is between neurons. The synapse travels long distances and the action potential can only travel short distances. The action potential starts at the dendrites and the synapse starts at the ахon. The action potential is always the same and the synaptic potentials vary. the action potential involves only the postsynaptic neuron, but the synapse involves both the pre- and post-synaptic neurons.
11) Compare the propagation speeds of an action potential along an axon that is 10 µM in diameter and one that is 20 uM in diameter. You must have a quantitative answer. 12) How would the velocity of action potential propagation change if you quadrupled the membrane conductance? You must have a quantitative answer. 13) You discover a mutation in mice that causes them to suddenly lose their myelin sheaths. How would this mutation change the speed of action potential propagation and why? 9
- Which of the following describes the concentration of K+ and Na+ ions in and around a resting neuron?1- K+ and Na+ ion concentrations are both higher outside of the cell.2- K+ ion concentration is higher inside of the cell, Na+ ion concentration is higher outside of the cell.3- K+ ion concentration is higher outside of the cell, Na+ ion concentration is higher inside of the cell.4- K+ and Na+ ion concentrations are similar inside of and outside of the cell. - An action potential:1- is a large change in polarization.2- is an "all-or-nothing" response.3- will travel down the length of the axon4- all of the above - What prevents action potentials from traveling away from synaptic terminals?1- Inactivation of Na+ channels behind the zone of depolarization.2- Inactivation of K+ channels behind the zone of depolarization.3- An increased in graded potential along the length of the axon.4- All of the above - Which brain region is incorrectly paired with one of its functions?1- midbrain -…
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