Principles of Anatomy and Physiology
16th Edition
ISBN: 9781119662792
Author: Tortora, Gerard J., DERRICKSON, Bryan H.
Publisher: WILEY
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Textbook Question
Chapter 12, Problem 24CP
What are the functions of diverging, converging, reverberating, and parallel after-discharge circuits?
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Discuss the similarities and differences between converging andparallel-after-discharge circuits
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Chapter 12 Solutions
Principles of Anatomy and Physiology
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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- Sometimes diverging circuits split into excitatory and inhibitory paths. When might such a circuit be required?arrow_forwardWhat is a local current? How do local currents cause thepropagation of action potentials in unmyelinated axons?arrow_forwardWhat is a depolarizing graded potential?arrow_forward
- What causes Hyperpolarization following the spike of the action potential?arrow_forwardc) What is the main mechanism contributing to the absolute refractory period in neurons: a) potassium ions can only flow outside the neurons. b) autoreceptors are inhibiting the opening of ionotropic sodium channels, c) the voltage-dependent sodium channels cannot be opened. d) the voltage-dependent potassium channels cannot be opened. e) there are too many sodium ions inside the cell to permit another action potential. f) undershoot hyperpolarizationarrow_forwardHow are action potentials propagated along an excitable membrane?arrow_forward
- 12) when K+ voltage-gated channels open, which of the following occurs? a) depolarization b) both depolarization and repolarization c) repolarization d) neither deolarization or repolarizationarrow_forwardAction potentials move along different axons at different speeds. The slowest speed of conduction will be found in A) large unmyelinated axons B) small unmyelinated axons C) large myelinated axons D) small myelinated axonsarrow_forwardwhich of the following would be true (more than one can be true)? a) summation of A and X would reach threshold b) summation of C and A would be a graded potential c) stimulation by A would depolarize cell d) stimulation by B would be a subthreshold depolarization e) summation of B and C would be a graded potential with the net value of 12 mV depolarizationarrow_forward
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