Daniel Whiting
Quiz by , created more than 1 year ago

Basic principles of brain organization and neuroanatomy & Electrical Signals of Nerve Cells Voltage-Dependent Membrane Permeability & Channels and Transporters

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Daniel Whiting
Created by Daniel Whiting about 8 years ago
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COGS100 Weeks 1 and 2 revision quiz

Question 1 of 16

1

The resting membrane potential of a neuron is typically about

Select one of the following:

  • -40 to -70mV

  • 40 to 70mV

  • 0mV

  • 90mV

Explanation

Question 2 of 16

1

An action potentials amplitude can vary greatly.

Select one of the following:

  • True
  • False

Explanation

Question 3 of 16

1

Passive current flow in a neuron is efficient enough for transmission.

Select one of the following:

  • True
  • False

Explanation

Question 4 of 16

1

The current for an action potential is generated by ___.

Select one of the following:

  • An efflux of Na+ ions

  • An influx of Na+ ions

  • An influx of K+ ions

  • An influx of Cl- ions

Explanation

Question 5 of 16

1

Ion influx is facilitated by ___.

Select one of the following:

  • Co-Transporters

  • Active transporters

  • Ion channels

  • Action potentials

Explanation

Question 6 of 16

1

Ion concentration gradients are established by ___.

Select one of the following:

  • Active transporters

  • Ion channels

  • Action potentials

  • Ions

Explanation

Question 7 of 16

1

The Nernst Equation predicts...

Select one of the following:

  • The action potential

  • The receptor potential

  • The threshold potential

  • The equilibrium potential

Explanation

Question 8 of 16

1

The undershoot phase of an action potential is due to

Select one of the following:

  • K+ Permeability

  • Na+ Permeability

  • Action Potential

  • Resting Membrane Potential

Explanation

Question 9 of 16

1

The method of controlling membrane potential while also measuring permeability changes.

Select one of the following:

  • Patch clamp method

  • Voltage clamp method

  • Permeability test

  • Extracellular recordings

Explanation

Question 10 of 16

1

Myelination improves...

Select one of the following:

  • Conduction velocity

  • Ion channel efficiency

  • The refectory period

  • None of these

Explanation

Question 11 of 16

1

Conduction using nodes of ranvier is called.

Select one of the following:

  • Conduction velocity

  • Hyper Conduction

  • Saltatory

  • Myelinated conduction

Explanation

Question 12 of 16

1

The two types of cells responsible for myelination are ___.

Select one of the following:

  • Oligodendrocytes and Schwann Cells

  • Neurons and Astrocytes

  • Microglial and Astrocytes

  • Lower Motor Neurons and Upper Motor Neurons

Explanation

Question 13 of 16

1

There are 3 times as many glial cells as there are neurons.

Select one of the following:

  • True
  • False

Explanation

Question 14 of 16

1

The method of measuring single ion channels.

Select one of the following:

  • Extracellular recording

  • Voltage clamp method

  • Patch clamp method

  • Ion testing

Explanation

Question 15 of 16

1

How many transmembrane units make up one Na+ or Ca+ channel

Select one of the following:

  • 24

  • 4

  • 7

  • 1

Explanation

Question 16 of 16

1

Hodgkin and Huxely used what method to determine what ions were flowing.

Select one of the following:

  • Patch Clamp method

  • Voltage Clamp method

  • Intracellular Recordings

  • All of these

Explanation

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