Human Physiology
15th Edition
ISBN: 9781259864629
Author: Fox, Stuart Ira
Publisher: Mcgraw-hill Education,
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Chapter 7, Problem 32RA
Summary Introduction
To review:
The functions of G-proteins in synaptic transmission and the advantages of G-proteins mediating the effects of a neurotransmitter.
Introduction:
G-proteins or guanine
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Chapter 7 Solutions
Human Physiology
Ch. 7 - Draw a neuron, label its parts, and describe the...Ch. 7 - Distinguish between sensory neurons, motor...Ch. 7 - Describe the structure of the neurilemma, and...Ch. 7 - Explain how myelin sheaths are formed in the CNS....Ch. 7 - Explain what is meant by the blood-brain barrier....Ch. 7 - Define the terms depolarization and...Ch. 7 - Prob. 4bCPCh. 7 - Describe how gating of Na+andK+ in the axon...Ch. 7 - Prob. 5aCPCh. 7 - Prob. 5bCP
Ch. 7 - Prob. 6aCPCh. 7 - Describe the location of neurotransmitters within...Ch. 7 - Describe the sequence of events by which action...Ch. 7 - Explain how chemically regulated channels differ...Ch. 7 - Prob. 8CPCh. 7 - Prob. 9aCPCh. 7 - Prob. 9bCPCh. 7 - Prob. 10CPCh. 7 - Prob. 11CPCh. 7 - Prob. 12aCPCh. 7 - Prob. 12bCPCh. 7 - Prob. 13aCPCh. 7 - Prob. 13bCPCh. 7 - Prob. 14aCPCh. 7 - Describe the mechanism of action of glycine and...Ch. 7 - Give examples of endogenous opioid polypeptides,...Ch. 7 - Prob. 15bCPCh. 7 - Prob. 16CPCh. 7 - Prob. 17aCPCh. 7 - Prob. 17bCPCh. 7 - Prob. 17cCPCh. 7 - Prob. 1RACh. 7 - Prob. 2RACh. 7 - Prob. 3RACh. 7 - Prob. 4RACh. 7 - Repolarization of an axon during an action...Ch. 7 - As the strength of a depolarizing stimulus to an...Ch. 7 - Prob. 7RACh. 7 - Which of these is not a characteristic of synaptic...Ch. 7 - Prob. 9RACh. 7 - Prob. 10RACh. 7 - Prob. 11RACh. 7 - Prob. 12RACh. 7 - Prob. 13RACh. 7 - Prob. 14RACh. 7 - Prob. 15RACh. 7 - Prob. 16RACh. 7 - Prob. 17RACh. 7 - Which of these may be produced by the action of...Ch. 7 - Prob. 19RACh. 7 - In a step-by-step manner, explain how the...Ch. 7 - Prob. 21RACh. 7 - Prob. 22RACh. 7 - Prob. 23RACh. 7 - Prob. 24RACh. 7 - Once an EPSP is produced in a dendrite, how does...Ch. 7 - Prob. 26RACh. 7 - List the endogenous opioids in the brain and...Ch. 7 - Explain what is meant by long-term potentiation...Ch. 7 - Prob. 29RACh. 7 - Prob. 30RACh. 7 - Prob. 31RACh. 7 - Prob. 32RACh. 7 - Prob. 33RACh. 7 - Explain the nature of the endocannabinoids....Ch. 7 - Prob. 35RACh. 7 - Prob. 36RACh. 7 - Prob. 37RACh. 7 - Prob. 38RACh. 7 - Prob. 39RACh. 7 - Use the figure below (from figure 7.34) to answer...
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- When action potentials arrive at a synapse between a neuron and another cell, they stimulate the release of molecules of a ________ that diffuse over to that cell.arrow_forwardA common membrane-bound intermediary between the receptor and the effector protein within the plasma membrane is the __________________.arrow_forwardContrast the two types of summation at a synapse and explain how they function in synaptic decision making.arrow_forward
- Inhibitory postsynaptic potentials cause what type of change at the post-synaptic membrane?arrow_forwardDescribe mechanisms by which synaptic transmission is rapidly stopped. Why is it important that transmission be stopped?arrow_forwardSome drugs/medication are known to act as neurotransmitter. Try to name at least three of thesecompounds and identify what response each imitates in some other neurotransmitter.arrow_forward
- The correlation between neurons can explain the basis of the synaptic modification, that is, how much they can connect to each other or if they are not synchronized, how much they can lose or weaken their connections. • Draw a picture of an excitatory synapse such as glutamatergic with its receptors between the pre- and postsynaptic neuron. • Briefly explain what mechanisms involve neuronal plasticity and why synapses are enhanced or weakened.arrow_forwardBotulinum toxin is a neurotoxic protein produced by the bacteria Clostridium botulinum. Botulinum toxin binds to the pre-synaptic neuron preventing exocyctosis. Using this information and what you know about action potentials, graded potentials and synapses answer the questions below. Could a graded potential occur in a presynaptic nerve affected by botulinum? If so under what conditions?arrow_forwardWhen an inhibitory neurotransmitter such as GABA opens cl– channels in the plasma membrane of a postsynaptic neuron, why does this make it harder for an excitatory neurotransmitter to excite the neuron?arrow_forward
- Describe the molecular machinery required for neurotransmitter release at the synapsearrow_forwardTwo excitatory synapses on a neuron fire at the same time as one inhibitory neuron. Each synapse comes from a different presynaptic neuron. Explain what happens at each synapse (in the post-synaptic neuron) and what determines whether this neuron will fire.arrow_forwardWhat would happen to synaptic transmission if you blocked the degradation and/or reuptake of excitatory neurotransmitters in the synaptic cleft? What if the neurotransmitters were inhibitory?arrow_forward
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