Neuro Final Review Ch1- Ch7

Which stain is most useful for studying the morphology of individual neurons?

Golgi

Nissl

Which component of the cytoskeleton is especially prevalent running lengthwise down the axon to serve as tracks for axoplasmic transport and resists compression?

If axoplasmic transport is impaired, which of the following is most likely to result?

The axon cannot propagate action potentials

The soma cannot produce new proteins

The axon terminal runout of neurotransmitter proteins

The membrane potential gets stuck at -80mV

The dendritic spines fail to mature

Which of the following is most responsible for generating and maintaining the ionic concentration gradients required for action potentials?

Which equation can be used to calculate an ion's exact equilibrium potential, given its intracellular and extracellular concentrations?

Which of the following will speed up action potential conduction?

A neuron has an intracellular K+ concentration of 150mM and an extracellular K+ concentration of 9mM. Is K+ likely to flow into or out of the neuron?

Into

Out of

Do you expect the equilibrium potential for K+ to be...

Positive

Negative

Neutral

Imagine the extracellular K+ has increased to 90mM. What happens to the equilibrium potential for K+?

It becomes more positive (less negative) than before.

It becomes more negative (less positive) than before.

It does not change.

How will this change in extracellular K+ concentration affect resting membrane potential for the neuron?

It will raise the resting membrane potential

It will lower the resting membrane potential.

It will not change.

When AMPA receptors are activated:

They produce an EPSP

They produce and IPSP

None of the above

Where are gap junctions found?

Synapse between a neuron and a muscle cell

Electrical synapses

Synapse between a neuron and a glandular cell

Chemical synapses

Which family of neurotransmitters includes members that are synthesized in the cytosol of the axon terminal?

Why do NMDA receptors only activate when the neuron is depolarized?

The NT cannot bind to the NMDA receptor until the neuron depolarizes

The S4 helix twists when the membrane depolarizes

The receptor repels its associated G-protein when the neuron is polarized

A magnesium ion blocks the channel pore when the neuron is polarized

Which of the following statements regarding the ventricular system is FALSE?

The ventricle contain cerebrospinal fluid

The space of the ventricular system is continuous with the subarachnoid space

The lateral ventricles are not connected to the rest of the ventricular system

Choroid plexus lining each ventricle produces CSF

The Cell bodies in the dorsal horn of the spinal cord:

Are motor neuron cell bodies

Are interneuron cell bodies

Are primary somatosensory cell bodies

Receive input from the primary somatosensory neurons

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Neuro Final Review Ch1- Ch7

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