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