PRIN.OF HUMAN ANATOMY (LL)
15th Edition
ISBN: 9781119662761
Author: Tortora
Publisher: WILEY
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Textbook Question
Chapter 12, Problem 17CP
What effect does miyelination have on the speed of propagation of an action potential?
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Why is the propagation of action potential unidirectional?
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Chapter 12 Solutions
PRIN.OF HUMAN ANATOMY (LL)
Ch. 12 - l. What is the purpose of a sensory receptor?
Ch. 12 - What are the components and functions of the SNS...Ch. 12 - 3. Which subdivisions of the PNS control voluntary...Ch. 12 - Prob. 4CPCh. 12 - 5. Describe the parts of a neuron and the...Ch. 12 - Give several examples of the structural and...Ch. 12 - 7. What is a neurolemma, and why is it important?
Ch. 12 - 8. With reference to the nervous system, what is a...Ch. 12 - 9. What types of electrical signals occur in...Ch. 12 - 10. Why are voltage-gated channels important?
Ch. 12 - 11. What is the typical resting membrane potential...Ch. 12 - 12. How do leak channels contribute to resting...Ch. 12 - 13. What is a hyperpolarizing graded potential?
Ch. 12 - 14.What is a depolarizing graded potential?
Ch. 12 - What happens during the depolarizing phase of an...Ch. 12 - Prob. 16CPCh. 12 - 17. What effect does miyelination have on the...Ch. 12 - How is neurotransmitter removed from the synaptic...Ch. 12 - Prob. 19CPCh. 12 - Prob. 20CPCh. 12 - Prob. 21CPCh. 12 - Prob. 22CPCh. 12 - What is a neural circuit?Ch. 12 - What are the functions of diverging, converging,...Ch. 12 - What factors contribute to a lack of neurogenesis...Ch. 12 - What is the function of the regeneration tube in...Ch. 12 - The buzzing of the alarm clock woke Carrie. She...Ch. 12 - Prob. 2CTQCh. 12 - As a torture procedure for his enemies, mad...
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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 graded potential? Where does a graded potential start in a neuron? Do graded potentials always result in an action potential? Are all graded potentials depolarizing? Why or why not? Where are action potentials started in a neuron and what is the threshold potential to do so in a neuron?arrow_forwardWhat is the relative importance of the Na+/K+ pump in action potential propagation?arrow_forwardWhat factors promote change in Vm (membrane potential) during an action potential?arrow_forward
- What degree of action potential in which the membrane potential moves from its maximum degree of depolarization toward the value of resting membrane potential?arrow_forwardWhat determines the size of a graded potential?arrow_forwardName the three phases of an action potential. Describe for each the underlying molecular basis and the ion involved. Why is the term voltage-gated channel applied to Na+ channels involved in the generation of an action potential?arrow_forward
- Describe the events involved in the generation and propagation of an action potential.arrow_forwardWhat will happen if threshold value for the generation of action potential is not reached?arrow_forwardWhat takes place during the repolarization and hyperpolarization phases of an action potential?arrow_forward
- What is the differences between graded potentials and action potentials? Give some examples?arrow_forwardNeurons, particularly those in the brain, receive multiple excitatory and inhibitory signals. What is the name of the extension of the neuron at which such signals are received? How does the neuron integrate these signals to determine whether or not to generate an action potential?arrow_forwardWhat is the role of maximal potassium conductance in the generation and propagation of action potential?arrow_forward
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