ANATOMY & PHYSIOLOGY LL W/CONNECT ACCESS
4th Edition
ISBN: 9781265521363
Author: McKinley
Publisher: MCG
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Chapter 12, Problem 8DYKB
Summary Introduction
Introduction:
The central nervous system consists of interneuron, which is organized as neuronal pools. These neurons perform the same function even though their cell bodies are present in the different part of the central nervous system. Each pool of neuron receives an input from the part of other pool and generates an output. These neuronal pools may produce excitatory or an inhibitory effect on other neuronal pool.
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Match the description with the statement that best describes the following neural circuits.
a single post-synaptic neuron receives input from multiple pre-
synaptic neurons
causes the stimulation of the post-synaptic neuron continually
similar to a positive feedback response
A. diverging circuits
B. converging circuits
C. reverberating circuits
causes a longer lasting stimulus of the post-synaptic neuron
D. parallel after discharge circuits
a single pre-synaptic neuron synapses with multiple post-synaptic
neurons
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A39
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Lidocaine is an anesthetic that is used to prevent the propagation of action potentials. Which compartment would lidocaine MOST likely target?
A. axon
B. dendrite
C. soma
D. synaptic cleft
Small gaps in the myelin sheath where the axon is exposed to the extracellular environment are called A. nodes of Ranvier B.oligodendroglia C.neuroglia D. Schwann cells.
Chapter 12 Solutions
ANATOMY & PHYSIOLOGY LL W/CONNECT ACCESS
Ch. 12.1 - Prob. 1WDYLCh. 12.1 - Prob. 2WDYLCh. 12.1 - Prob. 3WDYLCh. 12.2 - Prob. 4WDYLCh. 12.2 - Prob. 5WDYLCh. 12.2 - Prob. 6WDYLCh. 12.2 - Prob. 7WDYLCh. 12.2 - Prob. 8WDYLCh. 12.3 - Prob. 9WDYLCh. 12.4 - If a person has a brain tumor, is it more likely...
Ch. 12.4 - Prob. 11WDYLCh. 12.4 - Prob. 12WDYLCh. 12.4 - Prob. 13WDYLCh. 12.5 - Prob. 14WDYLCh. 12.5 - Prob. 15WDYLCh. 12.6 - Prob. 16WDYLCh. 12.6 - Prob. 17WDYLCh. 12.7 - Prob. 18WDYLCh. 12.7 - Prob. 19WDYLCh. 12.7 - Prob. 20WDYLCh. 12.8 - How are EPSP and IPSP graded potentials...Ch. 12.8 - Prob. 22WDYLCh. 12.8 - How does depolarization and repolarization occur...Ch. 12.8 - Prob. 24WDYLCh. 12.8 - Prob. 25WDYLCh. 12.9 - Prob. 26WDYLCh. 12.9 - Prob. 27WDYLCh. 12.9 - Prob. 28WDYLCh. 12.10 - Prob. 29WDYLCh. 12.10 - Prob. 30WDYLCh. 12.10 - Prob. 31WDYLCh. 12.11 - Prob. 32WDYLCh. 12.11 - Prob. 33WDYLCh. 12 - Prob. 1DYKBCh. 12 - Prob. 2DYKBCh. 12 - Prob. 3DYKBCh. 12 - Prob. 4DYKBCh. 12 - Prob. 5DYKBCh. 12 - Prob. 6DYKBCh. 12 - _____ 7. An action potential is generated when...Ch. 12 - Prob. 8DYKBCh. 12 - Prob. 9DYKBCh. 12 - Prob. 10DYKBCh. 12 - What are the four structural types of neurons? How...Ch. 12 - Prob. 12DYKBCh. 12 - How does myelination differ between the CNS and...Ch. 12 - Describe the procedure by which a PNS axon may...Ch. 12 - Prob. 15DYKBCh. 12 - Prob. 16DYKBCh. 12 - Explain summation of EPSPs and IPSPs and the...Ch. 12 - Graph and explain the events associated with an...Ch. 12 - Prob. 19DYKBCh. 12 - Prob. 20DYKBCh. 12 - Prob. 1CALCh. 12 - Prob. 2CALCh. 12 - Prob. 3CALCh. 12 - Prob. 4CALCh. 12 - Sarah wants to call her new friend Julie and needs...Ch. 12 - Over a period of 6 to 9 months, Marianne began to...Ch. 12 - Prob. 2CSLCh. 12 - Prob. 3CSL
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- V6arrow_forwardHeidi’s physician prescribed a medication that is known to block the reuptake of serotonin neurotransmitter from the synaptic cleft. This medication affects what segment in neuron transmission that is responsible for releasing the neurotransmitter? a. initial segment b. conductive segment c. transmissive segment d. receptive segmentarrow_forwardWhat chemical is released by the axon terminals of amotor neuron at a neuromuscular junction?a. ACh c. dopamineb. serotonin d. epinephrinearrow_forward
- 1) Which of the following accurately describes the direction of an impulse moving through a neuron that carries information to the central nervous system (CNS) from the peripheral nervous system (PNS)?a. A sensory (afferent) neuron, impulse moving distally.b. A motor (efferent) neuron, impulse moving proximally.c. A motor (efferent neuron, impulse moving distally.d. A sensory (afferent) neuron, impulse moving proximally. 2) The central nervous system (CNS) is composed ofa. spinal nerves.b. sense receptors.c. the brain and spinal cord.d. nerves of the internal organs.arrow_forwardDuring the action potential, which of the following activity is LIKELY to occur? Select one: a. Na+ channels open at the beginning of the action potential, and Na+ moves into the axon b. Na+ channel passages become smaller and get retracted at the beginning of the action potential c. Na+ channels are less active and static throughout the action potential process d. less Na+ is pumped to the axon when the action potential is triggeredarrow_forwardWhich of the following would be contained within the central nervous system? Select one: a. a neuron connecting the sensory and motor neurons b. a sensory nerve running from a hand to the spinal cord c. a nerve running from the spinal cord to the stomach wall d. a motor nerve going from the brain to a skeletal musclearrow_forward
- Where is the action potential generated initiated in the neuron? Select one: a. Nucleus of the neuron. b. Dendritic terminals. c. Post-synaptic gap. d. Axon hillock.arrow_forwardThe axon hillock of a neuron reaches the threshold of excitation and the membrane potential becomes completely reversed. Then, suddenly, the membrane potential begins to return to resting membrane potential. What is the event that triggers this return to resting potential? A. Na+ channels close in a voltage-dependent manner B. Na+ channels close in a time-dependent manner C. Na+ channels close in a chemically-dependent manner D. Na+ channels open in a voltage-dependent mannerarrow_forward12. An EPSP causes (depolarization/repolarization/hyperpolarization). These occur most often on what part of the neuron?___________________________________; ___________________________________.13, An IPSP causes (depolarization/repolarization/hyperpolarization). These occur most often on what part of the neuron?___________________________________; ___________________________________.14. Where on the neuron does integration occur (approximately)?___________________________________.arrow_forward
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