5750659
Descripción
Test por Daniel Whiting, actualizado hace más de 1 año
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Creado por Daniel Whiting
hace más de 8 años
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Pregunta 1
Pregunta
The resting membrane potential of a neuron is typically about
Respuesta
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-40 to -70mV
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40 to 70mV
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0mV
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90mV
Pregunta 2
Pregunta
An action potentials amplitude can vary greatly.
Respuesta
- True
- False
Pregunta 3
Pregunta
Passive current flow in a neuron is efficient enough for transmission.
Respuesta
- True
- False
Pregunta 4
Pregunta
The current for an action potential is generated by ___.
Respuesta
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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
Pregunta 5
Pregunta
Ion influx is facilitated by ___.
Respuesta
-
Co-Transporters
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Active transporters
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Ion channels
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Action potentials
Pregunta 6
Pregunta
Ion concentration gradients are established by ___.
Respuesta
-
Active transporters
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Ion channels
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Action potentials
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Ions
Pregunta 7
Pregunta
The Nernst Equation predicts...
Respuesta
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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
Pregunta 8
Pregunta
The undershoot phase of an action potential is due to
Respuesta
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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
Pregunta 9
Pregunta
The method of controlling membrane potential while also measuring permeability changes.
Respuesta
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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
Pregunta 10
Pregunta
Myelination improves...
Respuesta
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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
Pregunta 11
Pregunta
Conduction using nodes of ranvier is called.
Respuesta
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Conduction velocity
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Hyper Conduction
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Saltatory
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Myelinated conduction
Pregunta 12
Pregunta
The two types of cells responsible for myelination are ___.
Respuesta
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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
Pregunta 13
Pregunta
There are 3 times as many glial cells as there are neurons.
Respuesta
- True
- False
Pregunta 14
Pregunta
The method of measuring single ion channels.
Respuesta
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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
Pregunta 15
Pregunta
How many transmembrane units make up one Na+ or Ca+ channel
Respuesta
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24
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4
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7
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1
Pregunta 16
Pregunta
Hodgkin and Huxely used what method to determine what ions were flowing.
Respuesta
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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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