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Questions and Answers
Which type of neuroglial cells act as macrophages and are responsible for searching for cellular debris to phagocytize?
Which type of neuroglial cells act as macrophages and are responsible for searching for cellular debris to phagocytize?
What is the primary composition of the myelin sheath?
What is the primary composition of the myelin sheath?
In which part of the nervous system do oligodendrocytes form the myelin sheath?
In which part of the nervous system do oligodendrocytes form the myelin sheath?
What condition involves the deterioration of oligodendrocytes and myelin sheaths in the CNS, leading to disrupted nerve conduction?
What condition involves the deterioration of oligodendrocytes and myelin sheaths in the CNS, leading to disrupted nerve conduction?
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What are the Nodes of Ranvier?
What are the Nodes of Ranvier?
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What does a resting membrane potential of approximately -70 mV indicate about a neuron?
What does a resting membrane potential of approximately -70 mV indicate about a neuron?
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Which factor does NOT contribute to the resting membrane potential?
Which factor does NOT contribute to the resting membrane potential?
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How do gated channels in the plasma membrane contribute to the generation of electrical currents?
How do gated channels in the plasma membrane contribute to the generation of electrical currents?
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What primarily accounts for the difference in charge across a cell's plasma membrane at rest?
What primarily accounts for the difference in charge across a cell's plasma membrane at rest?
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What is an electrical current in the context of neurons?
What is an electrical current in the context of neurons?
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What occurs immediately after Na+ channels open?
What occurs immediately after Na+ channels open?
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During repolarization, what is happening to the K+ channels?
During repolarization, what is happening to the K+ channels?
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At resting membrane potential, which statement is true?
At resting membrane potential, which statement is true?
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What happens at the peak of depolarization?
What happens at the peak of depolarization?
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Which phase follows the depolarization of a neuron?
Which phase follows the depolarization of a neuron?
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What is the maximum density of Na+ channels found in the nodes of Ranvier?
What is the maximum density of Na+ channels found in the nodes of Ranvier?
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What phenomenon describes the process where a nerve signal appears to jump from one node to another?
What phenomenon describes the process where a nerve signal appears to jump from one node to another?
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What happens to the signal strength as it travels beneath the myelin sheath?
What happens to the signal strength as it travels beneath the myelin sheath?
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Why does Na+ inflow at the node generate an action potential?
Why does Na+ inflow at the node generate an action potential?
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What is a characteristic of the action potential generated at the node?
What is a characteristic of the action potential generated at the node?
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What neurotransmitter is employed by cholinergic synapses?
What neurotransmitter is employed by cholinergic synapses?
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What is the effect of acetylcholine on postsynaptic cells?
What is the effect of acetylcholine on postsynaptic cells?
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Which ion is primarily involved in the transmission at cholinergic synapses?
Which ion is primarily involved in the transmission at cholinergic synapses?
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Which type of synapse is an excitatory adrenergic synapse?
Which type of synapse is an excitatory adrenergic synapse?
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What happens to the animation display in different operating systems during a presentation?
What happens to the animation display in different operating systems during a presentation?
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Where is the action potential primarily generated within a neuron?
Where is the action potential primarily generated within a neuron?
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What is the minimum density of voltage-regulated gates required for an action potential to occur?
What is the minimum density of voltage-regulated gates required for an action potential to occur?
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What happens when an excitatory local potential reaches the trigger zone?
What happens when an excitatory local potential reaches the trigger zone?
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Which part of the neuron has the least density of voltage-regulated ion gates?
Which part of the neuron has the least density of voltage-regulated ion gates?
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What is the role of ligand receptors in relation to action potentials?
What is the role of ligand receptors in relation to action potentials?
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What happens to the plasma membrane during an action potential?
What happens to the plasma membrane during an action potential?
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What is the effect of the density of voltage-regulated gates in the soma?
What is the effect of the density of voltage-regulated gates in the soma?
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What must occur for an action potential to be triggered at the trigger zone?
What must occur for an action potential to be triggered at the trigger zone?
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