5750659
Beschreibung
Quiz von Daniel Whiting, aktualisiert more than 1 year ago
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Erstellt von Daniel Whiting
vor fast 8 Jahre
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Frage 1
Frage
The resting membrane potential of a neuron is typically about
Antworten
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-40 to -70mV
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40 to 70mV
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0mV
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90mV
Frage 2
Frage
An action potentials amplitude can vary greatly.
Antworten
- True
- False
Frage 3
Frage
Passive current flow in a neuron is efficient enough for transmission.
Antworten
- True
- False
Frage 4
Frage
The current for an action potential is generated by ___.
Antworten
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An efflux of Na+ ions
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An influx of Na+ ions
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An influx of K+ ions
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An influx of Cl- ions
Frage 5
Frage
Ion influx is facilitated by ___.
Antworten
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Co-Transporters
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Active transporters
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Ion channels
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Action potentials
Frage 6
Frage
Ion concentration gradients are established by ___.
Antworten
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Active transporters
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Ion channels
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Action potentials
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Ions
Frage 7
Frage
The Nernst Equation predicts...
Antworten
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The action potential
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The receptor potential
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The threshold potential
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The equilibrium potential
Frage 8
Frage
The undershoot phase of an action potential is due to
Antworten
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K+ Permeability
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Na+ Permeability
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Action Potential
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Resting Membrane Potential
Frage 9
Frage
The method of controlling membrane potential while also measuring permeability changes.
Antworten
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Patch clamp method
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Voltage clamp method
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Permeability test
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Extracellular recordings
Frage 10
Frage
Myelination improves...
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Conduction velocity
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Ion channel efficiency
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The refectory period
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None of these
Frage 11
Frage
Conduction using nodes of ranvier is called.
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Conduction velocity
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Hyper Conduction
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Saltatory
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Myelinated conduction
Frage 12
Frage
The two types of cells responsible for myelination are ___.
Antworten
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Oligodendrocytes and Schwann Cells
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Neurons and Astrocytes
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Microglial and Astrocytes
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Lower Motor Neurons and Upper Motor Neurons
Frage 13
Frage
There are 3 times as many glial cells as there are neurons.
Antworten
- True
- False
Frage 14
Frage
The method of measuring single ion channels.
Antworten
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Extracellular recording
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Voltage clamp method
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Patch clamp method
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Ion testing
Frage 15
Frage
How many transmembrane units make up one Na+ or Ca+ channel
Antworten
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24
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4
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7
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1
Frage 16
Frage
Hodgkin and Huxely used what method to determine what ions were flowing.
Antworten
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Patch Clamp method
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Voltage Clamp method
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Intracellular Recordings
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All of these
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